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diamong [38]
3 years ago
6

Which statement about life on Earth is true? a)Dinosaurs appeared before insects. b)Dinosaurs and insects appeared at the same t

ime. c)Humans have been on Earth for hundreds of millions of years.d) Humans have been on Earth for a very short amount of time.
Biology
2 answers:
dangina [55]3 years ago
4 0

Answer:

D

Explanation:

musickatia [10]3 years ago
3 0
The answer is D, Because dinosaurs appears in the Triassic period while insects appeared in the Devonian period which is about 160 million years about, which rules out A and B. Humans have been on Earth for almost 3 million years, which is nothing compared to the history of life in earth, which about 4,000 million years of life history, so D
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vivado [14]
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Photon
5 0
3 years ago
According to the hardy-weinberg principle, the p stands for:
nadya68 [22]
P stands for: c. the dominant allele
q therefore stands for the recessive allele. The frequency of the homozygous dominant genotype (i.e. gene T is TT), so p×p, which = p^2
The frequency of the homozygous recessive genotype tt is q×q, which = q^2. To find the heterozygous frequency Tt, we must consider that (p+1)=1, since these are the only 2 alleles. And if we square those terms, that's how we determine the frequencies. (p+q)^2 = 1^2
--> p^2 + 2pq + q^2 = 1, so the middle term (2pq) is our heterozygous frequency.
8 0
4 years ago
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Doss [256]
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6 0
3 years ago
this new kid in middle school ran 100 miles for a pacer test and the pacer test was outside and it was pretty close to the woods
Andre45 [30]

Answer:

Explanation:

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