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n200080 [17]
2 years ago
12

90! points please answer

Biology
2 answers:
Misha Larkins [42]2 years ago
6 0

Answer:

2. This gives the worms two separate populations of offspring that have different chances of surviving. An added benefit of being a hermaphrodite is that if a worm never finds a mate, it can fertilize its own eggs and reproduce that way. Many hermaphrodites experience this benefit.

3. Surprisingly, earthworms have quite a few digestive organs in common with humans. Digestion starts in the mouth, which takes in soil. The food is then transferred to the pharynx, which swallows the dirt into the esophagus. Instead of a stomach, earthworms have a crop which stores food and connects to the gizzard.

Explanation:

4. Worm castings contain the worms' gut bacteria and mucus. These microbes and substances are very helpful to plants. Vermicompost has more nitrogen-fixing bacteria than conventional compost. Vermicompost helps make minerals in the surrounding soil available to plants more quickly.

5. Comparative anatomy is an important tool that helps determine evolutionary relationships between organisms and whether or not they share common ancestors. Anatomical similarities between organisms support the idea that these organisms evolved from a common ancestor.

Dafna11 [192]2 years ago
6 0

Answer:

the answer is d heterozygous,

Explanation:

it is heterozygous because 382+293 is 2993

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Over time, these advantageous traits become more common in the population. Through this process of natural selection, favorable traits are transmitted through generations. Natural selection can lead to speciation, where one species gives rise to a new and distinctly different species.

Explanation:

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In the desert, saguaro cacti, owls, horned lizards, and fire ants all share the same space.
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The abolitionist convictions of sarah and angelina grimké carried particular weight because they were
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How do we classify finger prints?
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6 0
2 years ago
You decide to repeat the Meselson-Stahl experiment, except this time you plan to grow the cells on light 14N medium for many gen
Effectus [21]

Answer:

One band of light density and one band of heavy density.

Explanation:

According to conservative model of replication, the original strands do not separate from each other during replication. Hence, after replication the old strands are together and the new strands are together.

Here, cells were grown in 14N medium first so 14N was used for DNA replication and all DNA molecules had 14N. When the cells were transferred to 15N medium, only 15N was available for replication process. New DNA molecules would be synthesised using 15N (15N15N) and old DNA molecules have 14N (14N14N). Hence, in density gradient one band will be of light density (14N14N) and one band will be of heavy density (15N15N).

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