Biology is the study of living things or organism. It is a science of life. And it is a great affect of human development because and humans possesses both genetic and environmental surroundings. Genes are the first inheritance in all creatures that effects the appearance or purpose of an organism in definite manner.
Answer:
closed circulatory system has the blood closed at all times within vessels of different size and walk thickness. blood is pumped by a heart through vessels and does not normally fill body cavities
<span>Physical contamination</span>
From what I can see, here are the reasons.
1. Because a lot of people live a stressful life and they tend to get addicted to drugs, because it relaxes them.
2. And some people have gotten addicted to pain meds. and when they wore off, they started taking stronger meds. which ultimately lead to them being drug addicts.
I hope this helps!
Answer:
Counterconditioning
Explanation:
Counterconditioning, also known as stimulus substitution is a functional principle that forms a part of behavior analysis and it entails conditioning a response or behavior that is not wanted into one that is wanted by associating positive actions with the intended stimulus to be eliminated. In the case of Tim, alcoholism is the unwanted behavior, giving him disulfriam is the positive action associated, and it leads to a wanted behavior of not consuming alcohol because of the unpleasant effect it will cause.