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strojnjashka [21]
3 years ago
7

Draw the structural formula for a hydrogen molecule an oxygen molecule. Remember that each line represents an electron pair bein

g shared
Biology
1 answer:
maxonik [38]3 years ago
5 0
H-H

O//O

For oxygen, draw the lines horizontally
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Human birth weights range very narrowly between 5.5 and 8.5 pounds. Babies much smaller than 5.5 lbs. suffer a higher mortality
Margarita [4]

Answer:

a.  Stabilizing selection

Explanation:

Babies lower than 5.5lbs would suffer from various disorder because of low birth weight as their body would not be able to compete as well they would have weak immune system and malnourishment. Whereas high birth weight carry the equally above risk as their body wont be able to cope up and organs become insensitive to various hormones. for the survival the birth weight should be within a median range so that it would be favorable for themselves and surroundings.

Stabilizing selection occurs when a population stabilizes on a particular trait value and genetic diversity decreases. As in this example, an average baby weight has to favour against extreme variation for it's better survival.

therefore, this is an example of stabilizing selection.

3 0
3 years ago
You parents have type a and type b blood. which of the following could not be your genotype
Taya2010 [7]

Answer:

o, o+, b+

Explanation:

their genotype is either AA or AO or BB or BO

pls mark brainliest. thank you

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3 years ago
How do species change to their environment
julsineya [31]
They find differnt ways to survive like food shelter hiding from preditors etc
6 0
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When does the cell have to use active transport
bulgar [2K]
Active Transport<span> is used when substances are to be transported against their concentration gradient ( from low concentration to high concentration ) by utilising energy from ATP.
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eg - Na+/K+ pump.


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Passive immunity is described as?
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B. Antibodies produced by B cells
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