Answer:
they have short life spans and many predators.. hope this works
If all humans had the same DNA, and one person got the cold, everyone would die at some point. The more diversity there is the more chance of surviving an outbreak or natural disaster or something. Think of the flu. there are HUNDREDS of strains out there. some are resistant to our medicines and others aren't.
The statement that best describes the Americans who served in the Vietnam war was most of the US soldiers were all young, working class volunteers. The correct answer is D.
Answer: a specific gender
Explanation:
Answer:
Sunlight and heat react with gases in the atmosphere.
Explanation:
Smog forms purely as a result of air pollution.
Gases released from machines on earth rise up the sky.
The risen gases then meet and react with the sun plus fine particles in the atmosphere, smog forms.
Smog causes a lot of problems on earth among them being:
- Accidents due to the blurry effect causedv by smog on roads thereby distructing drivers.
