Help me please with both of them

Answer:

D

Explanation:

limestone isn't a primary mineral

Answer: Cells become abnormal if their DNA which carries the instructions they need becomes damaged.

Explanation:

i took the test

Answer:

Yes.

Explanation:

Yes, everything made or modified by humans with the help of knowledge and education. Without knowledge it is impossible to made new things or modify it. Carbon move from atmosphere to the biosphere by the process of photosynthesis done by plants in order to produce their own food so for that reason the plants take carbondioxide from the atmosphere and change into food whereas in the breathing of organisms this carbon moves again to the atmosphere. Carbon also moves from atmosphere to hydrosphere by dissolved in ocean water and lakes and the volcanic eruption and acid rain causes exchange of carbon between atmosphere and geosphere.

The contractile vacuole and the cell wall work together to prevent a plant cell from bursting.

The pressure exerted by the presence of excess water on the insides of the plant cell is called the turgor pressure. It is maintained with the help of two organelles. These are the cell wall and the contractile vacuole.

The cell wall is the outermost covering of the plant cells. It provides structure and rigidity to the plant cell. When a plant cell is kept in a hypotonic solution, it swells by taking up water by osmosis. The cell wall is an enclosed structure which prevents it from bursting. This condition of the plant cell is called turgidity.

Also, the contractile vacuoles of the plant cell are able to pump out excess water from the water when it has become extremely turgid.

Therefore, the cell wall and contractile vacuoles work together to prevent the plant cell from bursting.

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Since tongue rolling ability is determined by a single gene with two separate alleles—the dominant allele, which codes for tongue rolling ability, and the recessive allele, which codes for tongue rolling incapacity—tongue rolling ability is a discontinuous variation.

The hereditary characteristic known as tongue rolling ability controls whether or not a person can roll their tongue into a tube shape. This characteristic is frequently used as an illustration of a straightforward hereditary trait with discontinuous variation since there are only two possible outcomes: either a person rolls their tongue or they do not.

Either a person has the recessive allele, which prevents them from rolling their tongue, or they have the dominant allele, which allows them to roll their tongue. There is no intermediate or in-between trait, and the presence or absence of the dominant allele is a distinct, plainly observable phenotype.

Therefore, the capacity for tongue rolling is an illustration of a discontinuous variation.

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Answer:

i think its

Pituitary Gland<

Explanation:

The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.

The life cycle starts with an egg, which hatches into a tadpole, the tadpole eventually gains hind and front legs, turns into a froglet..

Answer:

D

Explanation:

I'm sorry for that other answers I hate when people do that good luck! :)

Answer:

The PH at which an enzyme will function best is;

In the optimal range

Explanation:

Every enzyme has an optimal pH value which is specific for the enzyme, and where their maximum activity of the  enzyme is observed, which is known as its optimal pH

When the enzyme is placed in a different pH, the enzyme activity is observed to be diminishing until the effect of the enzyme stops

This is so because, as the pH of the environment changes, the shape of the active site on the substrate to which the enzyme binds to have an effect changes and the enzyme is no longer able to effectively interact with the substrate

The enzymes in the stomach work best in the acidic environment of the stomach and have an optimal pH of 2, while the enzymes of the small intestine have an optimal pH of 7.5

Answer:

the answer seems to be A

Answer:

life is dynamic because without life we can not do anything .we will be like non living things.by the life we are able to move here and there .

Answer:

Rivers don't run straight because water flows in the least path of resistance

Explanation:

It is small disturbances in topography that set off reactions that alter the path of a river Any kind of weakening of the sediment on one side of a river due to animal activity it could also be because of  soil erosion, or human activity can draw the motion of the water towards that side.

Answer:

23 chromosomes

Explanation:

All normal cells have 46 chromosomes but sperm have half that number or, 23. If and when the sperm joins ups with the female's, egg (ovum) which also has 23 chromosomes, together they add up to 46 chromosomes.

In cell division, the cell that is dividing is called the "parent" cell. Cells regulate their division by communicating with each other using chemical signals from special proteins called cyclins. These signals act like switches to tell cells when to start dividing and later when to stop dividing.

Cells control their division by communicating with each other using chemical signals from special proteins which is known as cyclins.

Cell division is defined as the process by which a parent cell divides into two daughter cells usually as part of a larger cell cycle in which the cell grows and changes its chromosomes before dividing.

A single cell divides to give rise to two cells where these two cells then divide to form four cells, and so on. This process is called "cell division" and "cell reproduction" because new cells are formed when old cells divide. This plays an important role in all living organisms which is essential for growth, repair and reproduction.

This process helps in:

Thus, cells control their division by communicating with each other using chemical signals from special proteins which is known as cyclins.

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Answer:

The first and second hominids have a more recent common ancestor than the first and third hominids.

Explanation:

The similarity in DNA can definitely reveal us about common ancestry but it does not guarantee that the two species must be mating and reproducing. The best example to support this statement is that humans and chimpanzees  share a common ancestor and both have so much similarity in their DNA. The DNA of humans and chimpanzees is around 99% similar but still humans and chimpanzees cannot mate to produce off springs. Several attempts have been made in past to obtain fertile off springs by mating humans and chimpanzees but so far their mating has not produced any fertile off spring.

Answer:

Because trees don't produce food during the winter, they don't have the energy that it takes to maintain their leaves. ... This chemical triggers the tree to shed its leaves and to halt all growth to save energy.

Explanation:

Answer:

D

Explanation:

because it shows if the child will have a dominant trait from a parent or a recessive trait, which you can also find out what color eyes, hair, etc, your child will be born with.

Answer:

B) Mosquitoes are limited by temperature, with reproduction levels high in the spring and summer and low in the fall and winter.

Explanation:

Mosquitoes are limited by temperature, with reproduction levels high in the spring and summer and low in the fall and winter.

Answer:

B. Mosquitoes are limited by temperature, with reproduction levels high in the spring and summer and low in the fall and winter.

-Explanation:

Since mosquitoes reproduce when the temperatures are warm, their populations undergo a predictable increase in the warmer months. The first frost will kill many of the larvae and decrease the reproduction of these short-lived individuals.

Explanation:

The answer is ( faramones). for mating purposes..

☁️ Answer ☁️

annyeonghaseyo

Your answer is:

26.

Hope it helps.

Have a nice day noona/hyung!~￣▽￣❤️

Answer:

26

Explanation:

Hope this will help

Answer:

Asexual reproduction produces offspring from just one parent. These offspring are genetically identical to that one parent.

Explanation:

Answer: I put Mammals, The victim was not stubbed.

Explanation: im not really sure about but the final answer for the presentation/assignment is "Professor Astro used a cougar attack in the kitchen"

Answer:

omnivores are animals that eat plants and animals

Explanation:

Answer:

Kit fox

Explanation:

Omnivores means the predator eats both plants and animals.

Answer:

A couple of homologous chromosomes, or homologs, are a set of one maternal and one paternal chromosome that pair up with each other inside a cell during fertilization.

Explanation:

Answer:

A couple of homologous chromosomes, or homologs, are a set of one maternal and one paternal chromosome that pair up with each other inside a cell during fertilization.

Hope this helps. Can u give me brainliest

Explanation:

Answer:

c and d

Explanation:

i just did this trust me

Answer:

Israel borders Egypt, Jordan, Lebanon, Syria, and the Palestinian territories of West Bank and the Gaza Strip; it shares maritime borders with Cyprus.

Explanation:

yayy boom

Answer:

C

Explanation:

These groups, from largest to smallest are Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

Answer:

The correct answer is - C. Plants.

Explanation:

As we know and also given that the pond is usually smaller and shallower than a lake. Due to this reason, ponds have plants growing on the bottom of them from one side to the other as they get enough light as there is only the photic zone in ponds.

In lakes, there are various zones present and the lakes are deep and big to the ponds and the bottom of the lakes did not get sunlight. Plants require sunlight to grow and lakes are usually too deep to get the sunlight for plants to grow on the bottom.