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Hatshy [7]
3 years ago
12

______ were the first plants that did not require water for transferring sperm to eggs.

Biology
1 answer:
givi [52]3 years ago
8 0

Answer:

ferns

Explanation:

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Cerebrospinal fluid circulates within the ventricles of the brain and in the subarachnoid space outside the brain. Cerebrospinal
irina1246 [14]

Answer:

true

Explanation:

Cerebrospinal fluids  is a  colorless fluid  that is secreted in the choroid plexus,and  circulates in the ventricles system  and sub -aranchinoid space  of the brain and spinal cord. its provides nutrients  to the surrounding  neurons, cushions the effects of trauma, pressure, acts as buffer and provides protection through immune  system .

it plays a vital role in regulating  blood flow, through a process called cerebral auto regulation,This is needed to maintain efficient cerebral blood flow of oxygen and other metabolites, and withdraw of metabolic wastes from the brain.

in order to analyze it to diagnose some neurological diseases  its sample is usually taken out in a process called lumbar  puncture.

4 0
3 years ago
Testosterone causes secondary male characteristics list 3 such characteristics
Nonamiya [84]
1) appearance of beard and moustache

2) broadening of chest and shoulders

3) changing of voice into a more grave one
6 0
3 years ago
The brightest galaxy visible from the Milky Way is the Large Magellanic Cloud. It is one of eleven known dwarf galaxies that orb
padilas [110]

Answer:

irregular

Explanation:

4 0
3 years ago
Four hundred beetles of the same species were sprayed with an insecticide. Several weeks later, nearly all the beetles were dead
Kamila [148]

Answer:

D

Explanation:

Just trust me.  

it's not A because there's no such thing as favorable traits whenever it comes to incesticide and for B the majority of Beatles and future generations will also die that's only to the ones that died but that can not happen, which means that D is the one that will be the correct answer because if one lives, then the rest of the generations live due to immunity in the generation that started it.  

5 0
2 years ago
Read 2 more answers
in one to three sentences describe what happens during the carbon fixation stage of the calvin cycle.
BaLLatris [955]

Answer:

In fixation, the first stage of the Calvin cycle, light-independent reactions are initiated; CO2 is fixed from an inorganic to an organic molecule. In the second stage, ATP and NADPH are used to reduce 3-PGA into G3P; then ATP and NADPH are converted to ADP and NADP +, respectively.

Explanation:

3 0
2 years ago
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