False because extrusive rocks have fine-grained texture due to the rapid cooling of magna above the earth surface. On the other hand extrusive rocks have course grained texture due to slow cooling of magna beneath the Earth's surface
How is controlling wide spread/contagious diseases made difficult by the fact that it spreads through multiple species of animals?
(is it still too complicated?)
Answer:
Fewer Offspring than the environment can support
Explanation:
It takes time for a creature to adapt to its Environment. So that puts off 2.
Your guaranteed to get traits from your parents so that rules out #1
There isn't really an equal probability of survival for an offspring, ruling out #3.
So that leaves us with 4. I'm not biology expert, I'm just letting you know how I did this problem. Just in case i'm wrong, I would double check with other answers :)
