Random mutations are the ultimate source<span> of </span>genetic<span> variation. Mutations are likely to be rare and most mutations are neutral or deleterious, but in some instances the new alleles can be favored by natural selection.</span>
Answer:
Kiss My
Explanation:
jskznsbdbdmdjzkdnfnghnfhdbdjf
I think you forgot to give the options along with the question. i am answering the question based on my knowledge and research. "One group of bears was less highly evolved less than the two other groups and was destined to die out" is the one that explains why only one group of bears were extinct. I hope the answer has helped you.
The carbon atom can share 4 electrons in it's outer '' shell '' with other atoms. this is the reason it can form the high number of bonds with other elements.
Arctic & Alpine Tundra. Coniferous Forest (Taiga)
Tundra Biome. Alpine tundra in the Rocky Mountains of Colorado.
Coniferous Forest Biome.
