3.In Boreal forest, the flora are: (a) Pine Larch (b) Palm Bamboo (c) Oak Fig (d) None of the above.

4. The only artery carrying deoxygenated blood:
(a) Coronary Artery () Pulmonary Artery (c) Aorta (d) Both (b) and (c)

5. The protein molecule present in blood plasma :
(2) Antibodies (b) Antigens (c) Platelets (d) Immunoglobulins.

6. When the heart relates the pressure of the blood is known as:
(a) Systolic pressue (b) Thermal pressure (c) Diastolic Pressure (d) Hypertension.

7 In human the chemical coordination is brought about by
(a) Enzymes (b) Hormones (c) Tissues

pls answer fast I will mark as brainlist

I don't know Number 3 so i can't answer.

4. (B) Pulmonary arteries the only artery in the choices that deliver deoxygenated blood.

5. (D) Immunoglobulins are proteins found in blood plasma.

6. (C) Diastolic pressure. I think you meant "relaxes" not "relates"

7. I think the answer is (A) Enzymes. Hormones can also be an answer i think.

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."