BRAINLIEST Which statement best describes a characteristic of a scientific theory? Supported by mathematics to explain a principle of nature A readily demonstrable fact that cannot be disproven An educated guess that has not been consistently tested Supported by a substantial body of evidence observed in nature

D. Supported by a substantial body of evidence observed in nature

Explanation:

A scientific theory can be defined as :- an explanation of a feature in the natural worlds that can be repeatedly tested. This can be verified in accordance with scientific method by using different accepted protocols of observation , measurement and result evaluation.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.

the contamination

we are putting to many trash.