Answer:
The Pleistocene Epoch is typically defined as the time period that began about 2.6 million years ago and lasted until about 11,700 years ago. The most recent Ice Age occurred then, as glaciers covered huge parts of the planet Earth.
Before and after the patient coughs
Answer:
The stress response, or “fight or flight” response is the emergency reaction system of the body. ... The stress response includes physical and thought responses to your perception of various situations. When the stress response is turned on, your body may release substances like adrenaline and cortisol.
Explanation:
Answer:
A. Natural selection results in those individuals within a population who are best-adapted surviving and producing more offspring. The traits that promote survival are heritable.
Explanation:
Natural selection works on the genetic variations that are already present in the natural populations. Some organisms of a population are more likely to produce more offspring than the others. This is due to the presence of beneficial genetic traits in these individuals that impart survival and reproductive fitness to them. Natural selection favors those individuals. Over the generations, the frequency of the beneficial genetic trait in the population increases.
I believe the correct answer is A. Increases the rate of a chemical reaction. This is because they act as catalysts.