Which of the following statements about the interaction of earth’s systems is true?
a.
the interaction between earth’s systems is limited to a response to human activity.
b.
the earth’s system interact using positive feedback only.
c.
the earth’s systems interact using negative feedback only.
d.
all of the earth’s systems interact with each other.

The correct answer is option D, All of the Earth’s systems interact with each other

Explanation:

The four spheres of earth primarily  

a)Geosphere – consisting of rock and soil such as Earth’s core, mantle, and crust

b)Hydrosphere – consisting of water such as Earth’s oceans, lakes, rivers, groundwater, glaciers, polar ice caps, rain, and snow

c)atmosphere – consisting of Air, such as Earth’s oxygen, nitrogen, water vapor, ozone, and wind

d)biosphere - consisting of  Life , such as plants, humans, animals, insects and microbes

Interact with each other to share the material and energy between them. Some common examples include – evaporation of  water (hydrosphere ) to reach the air (atmosphere), Humans (biosphere) constructing something using the rock material (geosphere) etc.  

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.