It is B, Chlorophyll. 100% sure
The blood is collected in heparinized capillary tubes to prevent clotting. Heparin is a blood thinner and this anticoagulant is produced naturally by mast cells and basophils. But heparin can not dissolve or break the preformed clots.
Answer:
I. solid waste material settle out
Explanation:
In the primary sedimentation stage, sewage flows through large tanks, commonly called primary sedimentation tanks. The tanks are<u> used to settle sludge while grease and oils rise to the surface and are skimmed off.</u> Primary settling tanks are usually equipped with mechanically driven scrapers.
On the other hand, bacteria break down 85%-90% of organic matter is a <u>biological step</u> in the sewage treatment plant. Chlorine, ozone, or ultraviolet light are used in the <u>chemical step</u> of the sewage treatment plant.
Answer:
2 halves are equal to one whole
1/2 + 1/2 = 1
If it were single celled, then it would need some form of protection so the answer would be C. an outer covering