I guess I would say b or d. Because concluded results change over time with better technology and some solutions dont work.
Answer:
A - Only a Boy Can get a Y Chromosome
Explanation:
MARK AS BRAINLIST
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
Answer:
The characteristic features of the phylum Chordata are a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a tailgut.
Hope this helps
