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djverab [1.8K]
3 years ago
7

Hurry whoever answers first will get the brainliest

Biology
2 answers:
klasskru [66]3 years ago
5 0
D. He has an aerator that pumps bubbles into the tank
drek231 [11]3 years ago
4 0
The correct answer would be D) He has an aerator that pumps bubbles into the tank. Its not A) because that doesn't mean fish needs air, not B) because that's needed for the fish to LIVE, not breath air, not C) because that's for helping the fish stay alive in the water.
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Myelin sheath consists of axon?
forsale [732]
Rather, each myelin sheath insulates the axon over a single long section and, in general, each axon comprises multiple long myelinated sections separated from each other by short myelin sheath-gaps called nodes of Ranvier. ... In the CNS, axons carry electrical signals from one nerve cell body to another.
5 0
3 years ago
To efficiently provide the ideal amount of nitrogen fertilizer, some farmers make use of a "chlorophyll meter" that measures the
NikAS [45]

Answer:

Chlorophyll is a green pigment found in chloroplast in plants. It absorbs sunlight during the process of photosynthesis. It is a chelate molecule. In a chelate molecule a central metal ion forms bonds with a large organic molecule made of carbon, hydrogen and other elements like nitrogen or oxygen.

In chlorophyll, magnesium is the central metal ion and it is bonded to a large organic molecule called as porphyrin. Porphyrin constitutes four nitrogen atoms to which the central magnesium is bonded in square planar arrangement. Since chlorophyll is responsible for the green color of the leaves, more the green color more the chlorophyll content and more is the nitrogen content. Hence, chlorophyll meter measures this green light and finds out if the plant needs more or less nitrogen.

8 0
4 years ago
is the fluid portion of a blood sample that has been drawn in the presence of an anticoagulant compound.
Svetlanka [38]

Answer:

Plasma.

Explanation:

The main connective tissue of human body is blood. Blood mainly composed of the plasma and formed elements. Formed elements include white blood cell, red blood cells and platelets.

Blood plasma is present around 55% in composition. The blood plasma contains various coagulant factors, ions, proteins and chemicals. Plasma is the fluid portion of blood that needs to be drawn in presence of the anticoagulant compound.  

Thus, the answer is plasma.

6 0
3 years ago
Someone help!!! Please ASAPPP
Sav [38]
Do you have to come up with your own biome or did they describe one to you for you to figure out ? if so can you give me the description and if not let me know and i’ll come up with a biome for you !
4 0
3 years ago
TRUE / FALSE<br> The cell membrane of a plant cell can regulate the amount of water leaving it.
tankabanditka [31]
TRUE, it can regulate the amount of water leaving it.
6 0
3 years ago
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