<u>Answer:</u>
<em>The exposure of sea bed or undersea surface is called sea-level regression.</em>
<u>Explanation:</u>
Sea-level regression occurs when sea level drops down due to several climatic changes. This triggers extinction of several species. There had been several mass extinctions in the past due to <em>sea-level regression.
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<em>Chances of survival of shallow</em> water species become feeble when the sea level falls. In the case of mass extinctions regression can be seen as a symptom and not a cause.
Marine transgression is the opposite <em>phenomena of regression</em> where sea level rises and covers the land which was previously above the sea level.
The term "independent variable" means precisely what it sounds like. It is a variable that is independent of the other factors you are attempting to assess.
<h3>What is independent and Dependent variable?</h3>
- Dependent variables are so named because their values are explored in an experiment under the assumption or requirement that they are dependent, by some law or rule, on the values of other variables.
- The group that does not get the new medication being investigated in a clinical trial. This group is compared to the group that receives the new treatment to see if the new treatment is effective.
- Assume you want to put a new ADHD medicine to the test. One group would be given the new medication, while the other would be given a tablet that looked precisely like the one given to the others, but it would be a placebo.
- The control group would be the group that receives the placebo. A control group is the "untreated" group with which an experimental group (or treatment group) is contrasted in experimental designs.
- It is made up of research units that did not receive the treatment whose effect is being studied.
To learn more about independent variable, refer to:
brainly.com/question/82796
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Answer:
Evolution.
Explanation:
A small portion of the moth population began going to a different type of tree within the same forest to breed instead of the older one because of the evolution. Due to this evolution, the moth is able to breed on another tree. The characteristics of some moth specie changed over several generations due to may be change in their genetic makeup so we can say that it is because of evolution.
In gametogenesis , germinal cells multiply by mitosis and mature garnetes are formed by meiosis.
Answer:
Chlorophast allows plants to capture the energy of the sun.
