From the brightness of the light of course. If the brightness is increasing it means the the light source is approaching and if the brightness is decreasing it means the light source is leaving.
It is useful for an ecologist to identify the keystone species in an ecosystem because the keystone species is important to maintaining the stability of an ecosystem, and any changes in the keystone species population shows that there is changes in ecosystem health.
<span><span>Hi JayBo22!
Volcanic gas have water vapor, carbon dioxide and sulfur!
Fun Fact: You can find nitrogen, argon, helium, neon carbon dioxide, hydrogen, and methane.
I hope this helps;)
</span></span>
11. C
12. A
13. B
16 and 17. Dont know sorry
Answer:
Only in meiosis does the amount of chromosomes change, not in mitosis, so each of the daughter cells will also have 32 chromosomes
Explanation:
