What are the four steps that explain how traits in a population change over time?
There are four principles at work in evolution—variation, inheritance, selection and time. These are considered the components of the evolutionary mechanism of natural selection.
Answer:
It lacks a wall thus use the contractile vacuole to collect and expel excess water from the cell.
Explanation:
- The contractile vacuole regulates the quantity of water inside a cell through a process known as osmoregulation.Osmosis constantly drives water in the cell since it is enclosed by a semipermeable membrane that can not keep the water out thus it is needed to prevent rupturing of the cell due to excess water in the cell.
Answer:
The correct option is D, Amylases.
Explanation:
Carbohydrates are one of the most essential biological molecules required by an organism's body. They are actively found in fruits, vegetables and dairy products.
The digestion of carbohydrates takes place as soon as the food is taken in by an organism. The saliva in the mouth contains enzymes known as amylases which are involved in the breakdown of carbohydrates. The amylases in the saliva breakdown the starch components of the food.
Answer:
Explanation:
Autoregulation is a biological term used to describe processes through which some biological systems are capable of regulating themselves. Autoregulation is most clearly exemplified by the distribution of blood and oxygen throughout the bodies of many different animals.
