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WITCHER [35]
3 years ago
10

Please answer asap i only have 30 minutes to submit

Biology
2 answers:
AVprozaik [17]3 years ago
6 0

Answer:

A is the youngest layer because all of the older layers are on the bottom.

Explanation:

natka813 [3]3 years ago
6 0

Answer:

A

Explanation:

A has the youngest fossils

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Oyster fishermen used to capture and cut up starfish to try and rid themselves
8090 [49]

Answer:

This is possibly a bad idea because it could mess up the balance of the oceanic ecosystem and because of the drop in starfish, the whole food chain could get affected and plants and animals could die.

hope this helped

8 0
3 years ago
Select the statement that best describes the difference between ribonucleic acid (RNA) and deoxyribonucleic acid (DNA)
saw5 [17]

Answer:<u><em>DNA and RNA are similar in structure because they both have: a sugar-phosphate backbone, and nitrogen base rungs- basically both made of nucleotides. DNA and RNA are similar in function because they both perform: protein synthesis.</em></u>

<u><em /></u>

Explanation:

7 0
3 years ago
In an atom, the number of protons equal the number of
Papessa [141]

Answer:

Isotopes

Explanation:

i may be wrong but I think it's isotopes since it's a neutral charge. Electrons are negative

Isotopes i searched up on Bing and it said it has the same amount

nuclei is just a plural noun for nucleus

4 0
3 years ago
Roman numerals in an outline signify _____.
xxTIMURxx [149]
Im sure its main ideas
3 0
3 years ago
Seed size in a plant is a polygenic characteristic. A grower crosses two pure-breeding varieties of the plant and measures seed
Juli2301 [7.4K]

Answer:

The F1 progeny is completely heterozygous for the <em>loci</em> of interest since they were obtained by mating between two pure-breeding plant lines. In the next generation, the backcross progeny will have homo-zygous individuals and therefore they will be more variable, resulting from meiosis in F1 hybrids

Explanation:

An F1 resulting from the cross between two pure-breeding plant lines will produce all hybrid individuals, all of them genetically (and phenotypically) identical. Meiosis in F1 hybrids is well known to produce homo-zygous genotypes and thus increases genetic diversity in progeny. For instance, for a single <em>locus</em>, the expected ratio of genotypes obtained from crossing two heterozygous parents is 1:2:1, i.e., one homo-zigous dominant individual, two heterozygous individuals (genetically identical to the parents) and one homo-zygous recessive individual; while the expected phenotypic ratio is 3:1 (i.e., 3 dominant expressing: 1 recessive expressing​).

3 0
3 years ago
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