How will the destruction of forests affect the amount of carbon dioxide in the atmosphere?
1.It should have no effect. Carbon dioxide is put in the air by the burning of fossil fuels.
2.There will be fewer plants to absorb carbon dioxide through photosynthesis, so carbon dioxide can build up in the atmosphere.
3.It should reduce the amount of carbon dioxide produced since there will be fewer organisms undergoing cellular respiration.
4.Oxygen and carbon dioxide are balanced. If you increase carbon dioxide by plant removal you will decrease the amount of oxygen.
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_____________________ is defined as the interaction of two or more gene variants to produce a certain phenotype
Fill in the blank(s) with correct word
In some mammals, what is the by-product of digestion that is produced in the stomach, and in which animals may it be produced in large quantities?
a. methane, in carnivores b. methane, in ruminants c. mucus, in ruminants d. mucus, in carnivores
How would a calcium deficiency affect the process of skeletal muscle contraction?
A) Skeletal muscles would not be able to utilize ATP as a source of fuel. B) The action potential would be blocked from entering the muscle fiber. C) The myosin heads would remain attached to actin molecules. D) Myosin heads would not bind to actin efficiently.
Astronomers have detected the presence of various chemicals in deep space similar to those thought to have been synthesized in Earth's early atmosphere. The environments where those deep space molecules originated would be most likely to contain ________
A) low oxygen, ultraviolet light, methane, nitrogen, and hydrogen B) abundant oxygen, no ultraviolet light, methane, nitrogen, and hydrogen C) oxygen, no ultraviolet light, and carbon monoxide D) abundant oxygen, ultraviolet light, methane, nitrogen, and hydrogen