Chemical reactions please help

Answer:

Temperate grasslands and tropical savannas are two biomes that are dominated by grass species, share similar wildlife, and have few trees. However, while temperate grasslands have hot summers and cold winters, the other grassland biome has both rainy and dry seasons

these are the correct answes

Explanation:

Answer:

First Blank: tropical savannas

Second Blank: trees

Third Blank: hot summers and cold winters

Fourth Blank: both rainy and dry seasons

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Gametes can be formed from the following genotype: TtYy are

B. tY

C. ty

D. TY

E. Ty

Explanation:

The gametes are formed by meiosis of the cell.

The cell with genotype TtYy will form four different types of gametes.

The cross is shown in the diagram attached.

The alleles of TtYy separates and form gametes by all possible combinations.

Four types of gametes formed by TtYy are - tY, ty, TY, Ty

Answer:

viruses are not living since they are smaller than a cell.

Explanation:

Have a good day :)

The viruses are not living as they are smaller than a cell. Thus the option D is correct.

The botanist and zoologists were studying tissues and proposed a theory that states that living things are made up of one or more cells and they are a basic unit of life. The new cells grow from the existing ones.

They gave the theory in 1838 on the basis of a comparison of plants and animal cells. The virus don't have cells that are larger enough and hence they are not living.

Find out more information about the original cell theory.

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Answer:

A,C,D

Explanation:

i took the test!

Natural selection requires inheritable variations among individuals, more individuals being born than can survive, and varying levels of fitness among individuals.

For natural selection to take place, certain conditions must be fulfilled. These include options A - Inheritable adaptations vary among individuals, C - More individuals are born than can survive, and D - Fitness varies among individuals.

A - Inheritable adaptations vary among individuals: This means that individuals within a population have different traits, and these traits can be passed down to their offspring.

C - More individuals are born than can survive: This refers to the concept of struggle for existence, where the resources are limited, but the organisms born are more than the resources can sustain, leading to a competition.

D - Fitness varies among individuals: This refers to differential survival and reproduction. Individuals with traits that give them an advantage in their environment are more likely to survive and reproduce, thus passing on those traits to future generations.

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Answer:

b

Explanation:

Answer:

Potential energy to kinetic energy

Explanation:

The answer is kinetic to potential because at the highest point of the track it has the highest amount of energy so at the bottom of the hill it has the highest amount of kinetic. And as it gradually climbs the steep hill it gaines more potential energy!

Answer:

True

Explanation:

The two different hypotheses of the origin of early cell structure are the iron-sulfide bubbles hypothesis and the lipid membrane hypothesis

Explanation:

The iron-sulfide bubbles hypothesis by William Martin and Micheal Russel originated from small-sized compartments formed with iron sulfide bubbles which were lying on the ocean floor. These compartments had organic matter trapped inside them and which developed further and started to be bounded by their own cell membrane.  

The lipid membrane hypothesis by Harold Morowitz proved that liposomes with the double lipid membrane formed organic material and could be separated from the environment. This theory stated that the cells were formed by the surrounding organic molecules .

The "heterotrophic origin" posits cells relied on external organic molecules, while the "autotrophic origin" suggests cells synthesized their own from inorganic sources.

Two early hypotheses regarding the formation of cells are the "heterotrophic origin" and the "autotrophic origin."

1. **Heterotrophic Origin**: This hypothesis suggests that the first cells were heterotrophic, meaning they relied on pre-existing organic molecules for energy and carbon sources.

According to this theory, these primitive cells may have formed in environments rich in organic compounds, such as primordial soups or deep-sea hydrothermal vents.

The cells absorbed nutrients from their surroundings, gradually evolving mechanisms to harness energy from available organic molecules. The key point here is that these early cells did not produce their own organic molecules but relied on external sources.

2. **Autotrophic Origin**: In contrast, the autotrophic origin hypothesis proposes that the first cells were autotrophic, meaning they could synthesize their own organic molecules from inorganic sources, such as carbon dioxide.

These early cells might have utilized energy from sources like sunlight or chemical reactions to drive the synthesis of complex organic compounds. Unlike heterotrophic cells, autotrophic cells could produce their own energy and carbon-containing molecules independently of external sources.

The main difference between these hypotheses lies in how they suggest early cells obtained organic molecules: heterotrophic cells absorbed them from the environment, while autotrophic cells synthesized them internally.

The end products of electron transport chain are:

Water

Adenosine triphosphate (ATP)

Explanation:

Answer:

Low gravity

Explanation: i would assume? :)

Answer:the answer is FREE FALL

Explanation:

Just answered it

Answer:

D

Explanation:

Brain

A scientist performs scientific investigations to test the hypothesis and reach a conclusion. The best reason for examining the link includes an explanation of the recently observed phenomena. Thus, option D is correct.

Scientific Investigation is defined as the discovery of new information that involves asking questions and researching to solve the problem and reach a solution. It involves testing the hypothesis that begins with observations.

The observation that women tend to give birth at late ages and the increase in the number of the frame population are used to conduct the scientific investigation so as to prove and explain the observed phenomena.

Therefore, option D. the scientific investigation uses the observed phenomena to explain the information.

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Answer:

In a scientific investigation the term quantitative data refers to numbers that are usually followed by a unit.

Explanation:

A scientific investigation can be described as an investigation which is made through the scientific method of research. A scientific question is often tried to be answered through valid experiments by this method. The experiments performed can either be quantitative or qualitative. Quantitative data is the data which is taken through mathematical or statistical methods and has a well-defined unit in which the measurements or numbers are being taken.  

Answer: Osmosis

Explanation: Osmosis is a process in which water move from an area of low solute concentration to an area of high solute concentration through a selectively permeable membrane. For osmosis to occur, it must be through a selectively permeable membrane. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

Active transport is the process whereby molecules move from areas of low concentration to areas of high concentration across plasma membranes, which requires energy usually in the form of ATP.

When molecules move from an area of low concentration to an area of high concentration across plasma membranes, the process is called active transport. This is in contrast to passive transport, where molecules move from high to low concentration. Active transport requires energy in the form of ATP because the molecules are moving against the concentration gradient. An example of this would be the sodium-potassium pump found in many cell membranes. This protein pump uses ATP to move sodium ions out of the cell and potassium ions into the cell, both against their respective concentration gradients.

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Answer:

Their similarity

Explanation:

Pharyngeal pouches are structures in vertebrates that develop in different parts of the body mainly in the face or neck. The similarity in their position and structural indicates a similarity . These structures provide evidence of evolution that the organisms evolved from the same ancestry.

A pharyngeal pouch (also known as Zenker's diverticulum) is a tiny bulge or pocket in the pharynx, similar to a hernia.

Pharyngeal pouches are transformed into different organs during evolution. This shows the relationship between different organisms using the pharyngeal pouch for different use.

Thus, this is how the pharyngeal pouches are the evidence of evolution.

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Active transport requires energy because it usually involves the movement of substances from an area of low concentration to an area of high concentration.

Active transport is the movement of a substance into or out of the cell. The movement is against the concentration gradient, and the movement is from lower concentration to higher concentration.

Example is diffusion.

Thus, the correct option is A.

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Answer:

Cellular Respiration Lets Organisms Capture Glucose Energy

Cellular respiration converts the chemical energy stored in glucose into chemical energy stored in the ATP molecule. ATP is used by all cells to power their metabolism and their activities. ... They then use the ATP energy for activities such as muscle contracting.

Explanation:

Answer: Cellular respiration help your body perform life functions by providing you with energy, and acting as a way to get rid of carbon dioxide from your body.

Explanation: When cellular respiration is complete, energy, water, and carbon dioxide will be produced. Energy will be used by your body, and carbon dioxide will be removed from your body into the air. Plants perform cellular respiration but produce oxygen and glucose, the things that your body needs to perform cellular respiration.

Answer: cartilage

Explanation: Cartilage is a type of connective tissue, tough and flexible that serves as a protection to the ends of the bones and allows them to move. Cartilage is made up of a dense network of collagen fibres in a gelatinous substances. There are three main types of cartilage: hyaline cartilage, elastic cartilage and fibrocartilage.

Pollution from a single, identifiable source is called point source pollution.

Explanation:

The things that we use for the production of anything releases some wastes products that act as a pollutant to  the environment. these are classified into two main category such as Point source and non point source pollution. In non point source pollution the cause for the pollution is from many places and it is very tedious to find the source of the pollution.

When a pollution occurs from a single and also an identifiable place or source then it is called as Point source pollution. Some of the examples of point source pollution includes, Factories, power plants, Municipal wastewater treatment plants,etc.

Final answer:

Pollution from a single, identifiable source is referred to as point-source pollution, which is easier to manage than nonpoint-source pollution due to its identifiable nature.

Explanation:

Pollution from a single, identifiable source is called point-source pollution. This type of contamination of the environment occurs when pollutants are released into the environment from a discernible, confined place. Examples of such single-source pollution include discharges from a pipe at a factory, overflows from combined sewer systems, leaks from storage tanks, or chemical spills. Conversely, nonpoint-source pollution is diffuse and originates from multiple, distributed sources.

In comparison, point-source pollution is generally easier to identify, monitor, and regulate, because the source is known. Nonpoint-source pollution, on the other hand, is more challenging to control, as it comes from a multitude of sources, like runoff from urban areas or agricultural fields that carry contaminants into bodies of water. It's important to understand the difference between these two types of pollution to effectively tackle environmental contamination.

Answer:

Work a punnett square for a father who is type A heterozygous and the mother is type B heterozygous.

Ab X Ba = AB, Aa, Bb, and ab

Explanation:

Father type A  has 50% while type B which is the mother has 25% and while 25% co-recessive trait.

Answer:the sun provides food for he cow because it makes food grow

Explanation:

Answer:

Yes, the moon is accelerating.

Explanation:

The moon is known to orbit around the sun at an average speed of 2,288 miles an hour. This translates to about 3,386 kilometers an hour. Further, it means that through its whole period of acceleration, it travels a distance of about 1,423,000 miles or 2,290,000 kilometers.

Municipal Solid Waste (MSW) landfill is a discrete area of land that recieves household waste.

Explanation:

Leachate collection System - A system of pipes that collect contaminated water that seeps into the bottom of a landfill.

Cells - They are approved areas for waste disposal.

Bottom liner - The landfill part that prevents the contact of burried waste with underlying soils and groundwater.

Groundwater Monitoring System - They are built to test the presence of leachate chemicals in the groundwater around landfill.

Answer:

the ocean provides water, food, and gives a home to sea animals.

Explanation:

Explanation:

Answer:

An estuary can be described as an area of brackish water where different rivers or streams meet the open sea. Hence, an estuary forms a transition zone between an river environment and a marine environment.

Estuaries hold a lot of importance and are referred to as the nurseries of the sea. The estuary are home to many unique kinds of organisms. Certain kinds of fishes and shellfishes which humans consume cone from this area of the sea. There are high levels of nutrients moving in the estuary zone of the sea. Due to its shallow water, Pamlico estuary provides opportunities for fishing, crabbing and water- sports activities.

Estuaries like the Pamlico Estuary are crucial due to their commercial and biological significance.

Estuaries, such as the Pamlico Estuary, play a significant role both commercially and biologically.

Answer:

C: Being able to survive, find a mate, and produce offspring

Explanation:

The population is an important factor to the increased fitness of the organism, being able to reproduce would lead to the population of that organism to be more healthy.

Adaptation is the process by which a species adapts to its surrounding environment during evolution. Being able to survive, find a mate, and produce offspring, best describe the fitness of the organism.

Natural Selection:

It is the process by which the most appropriate organism survives and increases its population.

Therefore, Being able to survive, find a mate, and produce offspring, best describe the fitness of the organism.

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Final answer:

Uncontrolled cell division can lead to the development of tumors and cancer, as cells may not perform their functions correctly and could proliferate excessively. This is normally prevented by a tightly regulated cell cycle, controlled by a series of checkpoints and signaling mechanisms.

Explanation:

If cell division is not controlled in living organisms, the consequences can be dire. Cells may not perform their necessary functions properly, leading to abnormal growths like cancer. Healthy cells normally undergo regulated cycles of growth, DNA replication, and division, which include critical checkpoints to ensure everything is proceeding correctly. However, uncontrolled cell division can occur if there are failures of cell cycle control, often due to genetic abnormalities or environmental damage to DNA. These conditions can lead to rapid and uncontrolled growth of abnormal cells, forming tumors that may be benign or malignant—cancerous—depending on their potential to harm surrounding tissues.

The cell cycle is normally tightly controlled by a complex system that includes both internal regulators and external signals. These regulatory mechanisms are crucial for maintaining cellular and organismal health. Loss of this control, often through mutations or external factors, leads to diseases like cancer. It's a balance of 'stop' and 'go' signals that direct cell cycle control, and any disruption can result in excessive cell division and tumor formation, potentially leading to serious health issues or death.

fever caused by a protozoan parasite that invades the red blood cells.

Answer:

a tropical disease caused by a parasite

Explanation: it it a mosiqto bite from tropical islands

Answer:

its A

Explanation: