A basic source of pollution is from unnatural sources and people.
True False

Disturbance of the natural environment often produces "BLANK" results.

a) unexpected
b) predictable
c) minimal
d) expected

The best word to describe a group of microorganisms which float on water is:

community
ecosystem
food chain
environment

Ideally, an inventory of an ecosystem should be taken:

before a problem is suspected
as soon as a study is needed
when species may be in danger of extinction
all of the above

Respuesta :

true

d
c
Have a nice day

Pollution is the unwanted harmful particles that occur from unnatural sources (factories, vehicles) and people. Thus, the statement is true. The correct options are 2. a, 3. d, and 4. c.

What is an ecosystem?

An ecosystem is a biological community that comprises organisms along with the physical environment. The disturbance in the natural environment may lead to unexpected results. Hence, option a is correct.

The microorganisms floating on the water surface are described by the word 'environment.' Hence, option d is correct. An inventory of the ecosystem must be taken when the species may be on the verge of extinction. Hence, option c is correct.

Learn more about the ecosystem here:

https://brainly.com/question/13979184

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