NEED HELP PLEASE Some organisms can reproduce asexual and sexual. What are the advantages of reproducing sexually under harsh conditions?

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.

If a human has 23 pairs of chromosomes in every muscle cell of its body how many chromosomes will be in a human egg or sperm

Which characteristic should describe all evidence collected by a scientist? true obvious objective subjective