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jeka57 [31]
3 years ago
11

Short-spined sea urchin fossilswere found directly above long spined sea urchin fossils in a layer of rock. What do the differen

ces between the two sets of sea urchin fossils suggest about them?
Biology
2 answers:
Daniel [21]3 years ago
7 0

Answer:

It suggests that the longer spined sea urchins existed before the shorter spined sea urchins.

PtichkaEL [24]3 years ago
4 0

Answer:

As the animals die, they get covered in layers. The lowest being the oldest. The difference is showing us a direct link between the two fossils. This means that the longer-spined sea urchins existed before the shorter-spined sea urchins. And evolved to have shorter spines rather than long ones.

Explanation:

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oksian1 [2.3K]

The plant cell referred to in the question is attached to this answer.

The structure in the plant cell that represent the sites of ATP production from photosynthesis is the CHLOROPLAST; THAT IS OPTION B.

The photosynthesis reaction is divided into two stages, which are the light reaction and the dark reaction. The light reaction takes place in during the day in the presence of sunlight and it is during this period that ATP molecules are formed in the stroma of the chloroplast. During the dark reaction, the ATP produced during the light reaction together with NADPH are used as source of energy and reducing power respectively to manufacture carbohydrate from carbon dioxide.

Download docx
6 0
3 years ago
​lifestyle habits that can have a profound influence on health and on physiological age include _____.
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Lifestyle habits that can have a profound influence on health and on physiological age include:

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4. Drinking water: A habit of drinking a cup of water once in an hour keeps the body hydrated and reduces the chances of getting a headache.

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3 years ago
Applying Ideas Insect bites hurt because the
Phoenix [80]

Answer:

Treating the affected area with an alkaline solution or substance such as baking soda.

Explanation:

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  • E.g HCl + NaOH → NaCl + H2O
  • The formic acid that the ant injects can be neutralization by application of an alkali.
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Answer:

Explanation:

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