One, a lot of mass extinctions are based on theories by scientist. Two, they all caused major changes in the Earth's systems (Ex. ecology, atmosphere, surface, and waters). Three, they all have theories on what caused it.
Also this is obvious but in all mass extinctions they wiped out a lot of lifeforms, 90% of anything that has EVER lived on the Earth is extinct.
Hope this helps! :-)
Answer: Female
Explanation:
Females cant mate but somehow “life found a way”
Answer:
The science that involves using living organisms to produce needed materials.
Explanation:
I got this question correct!
<span>The question is the following: "Smokers have a greater chance of developing deadly diseases" and I assume we are asked to determine whether it's true or false. It is a true statement - and we can see it on the packaging of cigarettes in many countries. Some of these diseases are cancer (for example lung cancer) and diseases of the blood stream.</span><span />
