Author Question: An ecosystem is best described as A) a system that is composed of nonliving or inorganic matter. ... (Read 59 times)

Jipu 123 · **on:** Jul 14, 2018

An ecosystem is best described as

A) a system that is composed of nonliving or inorganic matter.
B) a system composed of living organisms.
C) a group of living organisms and the abiotic spheres with which they interact.
D) all living organisms in the atmosphere, hydrosphere, and lithosphere.
E) a group of living plants and the soil types that is present.

Question 2

What is the difference between density and concentration? Density is the ________ with which something occurs in ________, and ________ is the extent of a feature's spread over space.

A) space, concentration, frequency
B) frequency, space, concentration
C) period, space, time
D) period, concentration, space
E) frequency, time, space