Salt concentration is the factor among the following factors given in the question that does not vary between a fast flowing river and a pond that receives no water input. The correct option among all the options that are given in the question is the second option. I hope the answer comes to your help.
A. Immune system
It helps our bodies fight everything that comes in our path.
Answer:
the answer is D :)
Explanation:
Active transport uses energy molecules to move particles like sodium, against their concentration gradients, from areas of low concentration to areas of high concentration.
Answer:
those cause by bacteria
Explanation:
Antibiotics fight bacterial infections either by killing bacteria or slowing and suspending its growth. They do this by: attacking the wall or coating surrounding bacteria. interfering with bacteria reproduction.
Answer:
I think the answer is determining infectivity of a virus
Explanation:
hope that it will help you
