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.  

option number one would be youre best option

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation: