Answer:
an opening into a vessel or cavity of the body.
The saliva has enzymes that start to break down food using the lock and key system.The teeth chews the food and begins mechanical break down of food
Sample A has a much stronger melting point and it will last longer than Sample B.
Answer:
An ecosystem is a set of plants and other living organisms ( biocenosis) that are interrelated and that share the same environment with certain physical and chemical characteristics ( biotope). One ecosystem differs from another because of its biodiversity, its climate, and its geography.
<h3><u>Answer;</u></h3>
In vitro
<u>In vitro</u> is a procedure that is performed not in a living organism but in a controlled environment, like a test tube or Petri dish.
<h3><u>Explanation;</u></h3>
- <u>In vitro refers to the technique of performing a given procedure in a controlled environment outside of a living organism.</u> In vivo on the other hand refers to experimentation using a whole, living organism as opposed to a partial or dead organism.
- <em><u>Many experiments in cellular biology may be conducted outside living organisms, that is in the lab. Using in vitro is disadvantageous as cells may fail to replicate the same cellular conditions of an organisms especially with bacteria.</u></em>
