The circulatory and respiratory systems interact to maintain homeostasis by
a. blood cells picking up and carrying oxygen from the lungs to the body's cells.
b. the collection and return of fluid from the lymphatic system that leaked from the blood vessels.
c. blood plasma transporting salts, sugars, fats and dissolved proteins through the body.
d. the coordination of the diaphragm and rib cage moving air into and out of the lungs.

Blood cells picking up and carrying oxygen from the lungs to the body's cells (Ans. A)

Explanation:

Red blood cells (RBC) have the main function of carrying oxygen. These cells are present in our blood & their journey begins in the lungs where they picking up & carrying oxygen from the air we breathe. Then the blood cells travel to the heart through the veins, which pump out the blood & delivering oxygen to all parts of our body.  

So, the correct option is A.

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.