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Marianna [84]
3 years ago
8

PLEASE PLEASE PLEASE HELP 75 POINTS AND BRAINLIEST

Biology
1 answer:
grandymaker [24]3 years ago
6 0

Answer:

plz help me understand what your asking

Explanation:

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Which unicellular organisms in the soul help plants carry out nitrogen fixation
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Answer:

Nitrogen fixing bacteria in the soil and within root nodules of some plants convert nitrogen gas on the atmosphere to ammonia.

Nitrifying- bacteria convert ammonia to nitrites.

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2 years ago
PLSSS HELP THIS IS DUE IN 20 MIN
ra1l [238]

Answer:

Explanation:

1- closely packed osteons or haversian systems, used to provide strength and protection to bones.

2- Spongy bone consists of plates (trabeculae) and bars of bone adjacent to small, irregular cavities that contain red bone marrow. provides balance to the dense and heavy compact bone by making bones lighter so that muscles can move them more easily.

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1 year ago
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viktelen [127]
The answer is B because it’s burning coal and nutural gas
4 0
3 years ago
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It is believed the major reason for the decline in amphibian species is _______.
hichkok12 [17]
From my speculation it is loss of habitat and global warming
3 0
3 years ago
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If we were to observe a cell in prophase and see 3 centromeres, how many chromatids are present?
4vir4ik [10]

Answer:

The correct answer is - 6 chromatids.

Explanation:

Prophase is the stage in the cell cycle that is known for the condensation and disappearance of the nucleolus. In this stage chromosome become more compacts and the sister chromatids are still together and not separated. These sister chromatids are joined together with the centromere.

Centromere do not allow sister chromatids to move away and makes it intact. The number of centromere is the number of chromosme present in the prophase and half of the sister chromatids that means if there us 3 centromere than the number of sister chromatids will be 6.

6 0
3 years ago
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