Adequate supply of food
absence of predators
Answer:
a website with .edu .gov or a book written by a famous professsor or scientist
Explanation:
<span>The best response is that it reduces the effects of fragility and skin atrophy.</span>
answer:
it took 17,000 years for CO2 to go from 200 to 300 ppm.
<em>-- please mark the brainliest and click the thanks button if correct :)</em>
