Answer:
Reproductive isolation can occur when individuals or the populations exhibit differences in the timing of various activities like mating and so on .
You can increase positive impact on the environment in many ways build more bird houses for the birds clean up dirty streams and creaks
Answer:
churning of the stomach contents.
Explanation:
When food is moved to the back of the mouth by the tongue (deglutition), it does not cause the churning of the stomach contents.
The churning of stomach contents occurs when the bolus from the mouth has entered through the lower esophageal sphincter into the stomach. Churning is the mixing of the bolus with digestive juices containing acids and enzymes secreted from the stomach lining.
Eating. Your muscles in your arms and mouth use energy to feed itself. Then your body digest the food which also takes energy.
Sleep. When your tired, you don’t have much energy. It is said that you use more energy while your sleeping.
Answer:
1 Carbon dioxide (CO2) enters
2 Oxygen exits
3 water H2O is absorbed
