Answer:
enzyme
Explanation: enzyme is produced by a living substance which acts like a catalyst to bring about a specific biochemical reaction
Answer:
Cells can die because they are damaged, but most cells die by killing themselves. Some cell death processes leave no trace of the dead cell, whereas others activate the immune system with substances from the dead cell.
Explanation:
Answer:
Natural selection depends on the enviroment
Explanation:
Natural selection does not prefer features that are superior in some way. Instead, it favors characteristics that are advantageous in a particular setting. Characteristics that are beneficial in one context may be harmful in another.
Answer: germs and toxins and they prevent moisture from escaping the tissues
Explanation: