Answer:
The return of blood to the heart is assisted by the action of the skeletal- muscle pump. As muscles move, they squeeze the veins running through them. Veins contain a series of one-way valves, and they are squeezed, blood is pushed through the valves, which then close to prevent backflow.
Climate variations- averaged by using weather conditions from past years. Climate variability varies by seasons, because some seasons get colder than others. Maybe there could be more precipitation in the atmosphere, therefore making it easier to calculate rainfall in the future. makes people be aware of storms that are coming so that they will be prepared for whatever is coming their way
Answer:
i dont know actually but i belive in you . rremeber that you atre great and beutiful. i love you
Explanation:
Answer: Microbacteria breaks down minerals
Answer and explanation;
-Condensation means that you're linking 2 monomers together to form a larger molecule (anabolic process), where as hydrolysis is taking a large molecule and breaking it down into its monomers (catabolic process).
-A condensation reaction is a chemical reaction in which two molecules bond by removal of a hydroxyl (OH) group from one subunit and a hydrogen (H) group from another. (The OH and H combine to form a free water molecule.) Also called a dehydration reaction. The reverse reaction is hydrolysis.
-Hydrolysis is a chemical reaction in which a compound is broken down into smaller molecules by reacting with water. In biology most hydrolysis reactions involve polymers breaking down into monomers.