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Deffense [45]
3 years ago
13

PLEASE HELP DUE SOON 40 POINTS!

Biology
1 answer:
erma4kov [3.2K]3 years ago
7 0

Answer:

earth's atmosphere

Explanation:

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How does crossing over affect evolution?
Free_Kalibri [48]
<em>crossing-over affect evolution...
<u>reason:
</u>during crossing-over chromosomes exchange their genetic information...
because of this variations occur in new generation,, in new generation some characters are from maternal chromosomes and some are from paternal chromosomes... </em>
5 0
3 years ago
One of the main reasons why mammals may have been able to evolve so quickly during the present era is due to the extinction of t
Allushta [10]

False, I'd say. Mammals usually adapt based on environment. Now, I know predators are "apart" of the environment, but I don't think that'd be it. I'd bet more money on saying mammals evolve based on environment adaptation. Sorry if I didn't answer your question or if I didn't get my point across well.

4 0
2 years ago
Propane is burned to provide the heat in many cooking grills. The chemical
tangare [24]

Answer: it's 3CO2+4H2O+Energy

Propane is a linear alkane of formula C3H8. It is mainly used as fuel (this is the main component of liquefied petroleum gas) in cooking and chemical industry reactions.

The reaction of its complete combustion by the presence of oxygen is:

C3H8 (gas) + 5O2  ==> 3 CO2 + 4H2O + energy (2220⋅kJ)

As we can see, propane can release carbon dioxide and water as every combustion reaction, and a lot of energy in the form of heat.

6 0
1 year ago
What happens to the water resulting from cellular respiration?.
natta225 [31]

Answer:

It's secreted into the extracellular fluids. Collects in the lymph fluid, the vascular blood fluid and eventually the excess is secreted via, urine, feces, lung respiratory exhalation gases, sweat, nasal and mouth, throat mucous and saliva, tears, etc.

Request: Please mark me as the Brainliest.

7 0
2 years ago
If you have the frequency of the recessive allele for a gene, how do you get the frequency of the dominant allele?
Rzqust [24]

Answer:

The frequency of the recessive allele. Answer: Since we believe that the homozygous recessive for this gene (q2) represents 4% (i.e. = 0.04), the square root (q) is 0.2 (20%).

The frequency of the dominant allele. Answer: Since q = 0.2, and p + q = 1, then p = 0.8 (80%).

The frequency of heterozygous individuals.

Explanation:

8 0
2 years ago
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