Which action will best help prevent ground water erosion?

While the ovum is on its way to the uterus, a successful mating results in the presence of sperm cells in the fallopian tube. On

Oksanka [162]

If the sperm cell fertilises the ovum, and implantation does not occur, then the corpus luteum degenerates and it turns into corpus albicans, stopping progesterone secretion. If fertilisation occurs and implantation also, the syncytiotrophoblast, the "root part" of the blastocyst (one of the early structures originated from the zygote), produces a hormone that is called <span>human chorionic gonadotropin (hCG). The hCG is what makes the corpus luteum keep secreting progesterone and maintain itself. The progesterone will then help keep the endometrium and, therefore, allow the development of the embryo to happen.</span>

7 0

3 years ago

Provide an adaptive and a nonadaptive hypothesis for the evolutionary loss of useless organs, such as eyes in many cave-dwelling

Zepler [3.9K]

In order to be able to Provide an adaptive and a non-adaptive hypothesis, the following is required

<h3>What is adaptation?</h3>

It refers to a trait or an integrated set of traits that increases the fitness of an organism. It is the process of improving the fit of phenotype to environment through natural selection.

<h3>What is non adaptation?</h3>

it refers to those traits that do not result in the better adaptation of the organism to its environment, and does not increase the genetic fitness of the organism.

Let us take the case of vain organs. There may be a metabolic value to constructing a vain organ, and subsequently the humans who have misplaced that organ might also have a selective advantage. Also, if the organ is useless, the mutations that disrupt the improvement of that organ would be evolutionarily neutral, and may want to unfold to fixation via genetic drift.

So an adaptive hypothesis as to why an organism may lose useless organs is energy trade offs. The organism may additionally be losing energy in growing and retaining a vain organ, whilst this strength can be higher used someplace else. So an organism that lives in a darkish cave might also sooner or later lose its eyes considering eyes are of no use inside a darkish cave.

A non adaptive hypothesis for the evolutionary loss of organs can be random mutation. If a random mutation occurs that causes an organism to lose its eyes, in a dark cave where it does not use its eyes anyway, it could still survive, reproduce and pass that mutation down.

For more information on adaptive hypothesis, visit

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3 0

3 years ago

PLZ HELP!!!The green frog (Lithobates clamitans clamitans) is found in many parts of the United States. The table contains some

Kruka [31]

Answer:

Option B, It increases the probability that some offspring will survive long enough to reproduce.

Explanation:

The larger the number of eggs, the larger will be the available opportunities for at least few of the youngsters to develop into adult being and survive till the age of fertility. This shall enhance the chances of producing new offspring before the older one dies thereby replacing them without changing the population number and further producing offspring that can survive to replace them and continue this chain.

Hence, option B is correct

4 0

3 years ago

When testing tonicity of red blood cells, if the solution became transparent after adding blood cells, you could assume:.

sveticcg [70]

If the solution becomes transparent we could assume that ; The solution was hypotonic and the cells had burst.

<h3>Tonicity of red blood cells </h3>

To test for Tonicity of red blood cells, we placed the cells in a solution.When red blood cells are placed in hypotonic solution there is high rate of osmosis in which the solvent flows into the red cells placed in the solution the cells will experience a process known as Hemolysis and these cells do not diffuse light, the solution becomes a red transparent solution.

Hence we can conclude that If the solution becomes transparent we could assume that ; The solution was hypotonic and the cells had burst.

Learn more about Tonicity of red blood cells : brainly.com/question/6658551

4 0

2 years ago

What are the main components of a mature gymnosperm seed? select all that apply. select all that apply. embryo pollen grain food

BigorU [14]

POLLEN GRAIN, SEED COAT, MEGASPORANGIUM AND EMBRYO. <--- ANSWER

Gymnosperms are seed bearing plants, which do not have the combination of specialized features that characterized the flowering plants.

7 0

3 years ago