Question

1. what is the main component of the earth’s core?

a. silicon and oxygen
b. iron and nickel
c. carbon and hydrogen
d. magnesium and sulfur

1. which layer of the atmosphere contains the ozone layer?

a. troposphere
b. mesosphere
c. exosphere
d. stratosphere

1. which sphere interacts with the biosphere during photosynthesis?

a. atmosphere
b. biosphere
c. geosphere
d. lithosphere

1. which of the following is an example of an abiotic factor in an ecosystem?

a. plants
b. archaea
c. sunlight
d. fungi

1. how does the hydrosphere interact with the atmosphere?

a. through the process of photosynthesis
b. by absorbing and storing heat
c. by forming the earths crust
d. through volcanic eruptions

Explanation:

Question 4

The Earth's core is mainly composed of iron and nickel. Silicon and oxygen are major in the crust, carbon and hydrogen are in organic matter, and magnesium and sulfur are not core components.

The ozone layer is located in the stratosphere. The troposphere is near the surface, mesosphere is above stratosphere, and exosphere is the outermost layer.

During photosynthesis, plants (biosphere) take in carbon dioxide from the atmosphere. So the atmosphere interacts with the biosphere here.

Answer:

b. Iron and nickel

Question 5