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slavikrds [6]
3 years ago
6

Which type of skeletons do invertebrates such as crabs have?

Biology
1 answer:
jeka943 years ago
3 0
Answer: Exoskeleton

This is the answer to your question, hope it helps!
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describe the regional source and characteristics of each of the 5 air masses that affect the united states
Inga [223]

5 air masses that affect the united states are continental polar(cP), continental arctic(cA), continental tropical(cT),maritime polar(mP) and maritime tropical(mT).

The source of origin of cP is the snowy regions of Canada and Alaska ,of cA is the Arctic basin, of cT is  Mexico and south west US, of mP is the Northern Pacific Ocean and mT is the Gulf of Mexico,the Carribean sea,western Atlantic and subtropical Pacific.

<u>Explanation:</u>

Air masses are volumes of air that has uniform characteristics. Air masses are  divided into two based on its moisture content. They are continental air mass and maritime air mass which are dry and moist respectively.

The first letter in the abbreviation of an air mass denoted whether the air mass is continental or maritime. The letter c represents continental air mass and letter m represents maritime air mass. The source of origin of the air mass is represented by the second letter in the abbreviation of the air mass.

Air mass with tropics as the source of origin is represented by the letter T, air mass with equator as the source is represented by letter E, air mass with pole as the source is represented by the letter P and air mass with the Arctic or Antarctic as the source is represented by the letter A.

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3 years ago
The presence of nitrogen-fixing plants should benefit nearby individuals of other species, because nitrogen is a key nutrient--i
saul85 [17]

Answer:

The correct answer is "Nitrogen will only become available to other, nearby plants when the nodules or the nitrogen-fixing plant itself dies".

Explanation:

Nitrogen fixing bacteria maintain a symbiotic relationship with plants. Bacteria performs nitrogen fixation providing the plant with ammonia, while bacteria has a safe place and nutrients to prosper. This relationship is very intimate because it occurs at the root hair of the plant at structures called nodules. Therefore, nitrogen will only become available to other, nearby plants when the nodules or the nitrogen-fixing plant itself dies

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Checkpoints occur between the stages of the cell cycle. If a cell does not meet certain criteria at the end of a stage, it will
nordsb [41]
The answer to this question is DNA replicates
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Kipish [7]

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question 1 is 4. question 2 is 2. question 3 is 1. question 4 is 2. question 5 is 1=3 2=2 3=4 4=1. question 6 is 2

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