Question

question 5 (1 point)
coal contains at least 50% of what?
a plants
b animals
c metal
d dirt
question 6 (1 point)
according to some scientists oil might run out in how many years?
a 5 years
b 20 years
c 50 years
d 100 years

Explanation:

Question 5

Coal is formed from the remains of plants that were buried and subjected to heat and pressure over millions of years. By definition, coal contains at least 50% plant matter (in terms of its organic origin). Animals, metal, and dirt are not the primary components of coal in such a proportion.

Many scientific estimates suggest that with current consumption rates and known reserves, oil (fossil fuel) might be depleted in around 50 years (this is a general scientific estimate context; different sources may vary slightly, but 50 years is a common estimate among such projections, while 5 years is too short, 20 years is also shorter than most estimates, and 100 years is longer than many current projections).

Answer:

a. plants

Question 6