Answer:
The amount of CO2 found in the atmosphere varies over the course of a year. Much of this variation happens because of the role of plants in the carbon cycle. Respiration happens all the time, but dominates during the colder months of the year, resulting in higher CO2 levels in the atmosphere during those months.
Explanation:
Answer:
B
Explanation:
Mitosis is used to grow (makes diploid)
Meiosis is used to make haploid gametes
Answer:hello!
Explanation:
this might help it helped me have a great day!! https://quizlet.com/329289949/chapter-3-review-environmental-science-flash-cards/
Cells create tissues which create organs which make up systems so i believe the answer is D i hope this helps :)
Answer:
The correct answer will be option-E.
Explanation:
Chordae tendinae are the string-like structure in the heart which is composed of dense regular connective tissue called collagen and elastin proteins. They arise from the papillary muscles of the heart and branches out in the ventricle portion of the heart.
These play an important role in the closure of the AV valves to prevent the backward flow of the blood to the atria during ventricular contraction by holding cusps of the valve into the dome-shaped structure.
Thus, option-E is the correct answer.
