The rainforest contains half of the earth’s wildlife and at least two thirds of its plant species. it can hold great quantities of water and is very important to the planet’s water cycle. rainforests remove vast amounts of co2 from the atmosphere and replace it with oxygen. which of the following statements best summarize the above information about rainforests?
a.
the majority of the planet’s oxygen is generated from the rainforest.
b.
two-thirds of all plants originated from the rainforest.
c.
the rainforest is a major catalyst for the planet’s water cycle.
d.
the rainforest is important to life as a whole on the planet

The correct answer is option d.

Explanation:

Rainforests help in captivating carbon dioxide and discharge oxygen on which one relies upon for survival. The captivation of carbon dioxide also assists in stabilizing the climate of the planet.  

The rainforests also assist in monitoring the water cycle of the world by supplementing water to the atmosphere via the procedure of transpiration that produces clouds. The rainforests are the homes for various plants and animal species.  

The rainforests help in storing water like a huge sponge. It is found that the Amazon forests alone store about half of the rainwater of the planet. In the absence of rainforests, it would become difficult to restore the water bodies, thus, resulting in widespread disease and famine.  

The rainforests help to prevent soil erosion and it is found that more than 25 percent of the presently known medicines are obtained from the tropical rainforests.  

the answers are as following:

1. c. double helix, nucleosome, coil, supercoil, chromosome

2. b. g2 phase, preparation for mitosis

3. d. interphase consists of the g1, s, and g2 phases

4. c. metaphase

5. a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set