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skad [1K]
4 years ago
14

Four things our atmosphere does for us

Biology
1 answer:
mylen [45]4 years ago
6 0
1 it protects us from the sun
2 it breaks things down when it hits it.
3 it keeps our world a float
4 it helps us rotate
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Phenylketonuria (pku) is a disease that results from a recessive gene. Two normal parents produce a child with pku.(i) what is t
larisa86 [58]

1.What is the probability that a sperm from the father will contain the PKU allele?

Probability = ½

2.What is the probability that an egg from the mother will contain the PKU allele?

Probability = ½

3.What is the probability that their next child will have PKU?

Probability = ¼ (because each parent has ½ chance  ½ X ½ = ¼)

4.What is the probability that their next child will be heterozygous for the PKU gene?

Probability = ½ (because each parent has ½ chance of donating the ‘P’ allele and ½ chance of donating the ‘p’ allele  (½ x ½) + (½ x ½) = ½

4 0
3 years ago
What is a distinguishing characteristic of a saturated fatty acid
gulaghasi [49]

Answer: Single covalent bond in the long hydrocarbon chain.

Saturated fatty acids are long chains of hydrocarbon ( with single covalent bond) ending with the carboxylic group (-COOH). This means those fatty acids which possess only single bonds in their chemical structure are called as saturated fatty acids. They are densely packed, which makes them solid at room temperature.  

Example- Lauric acid ( present in coconut oil). It has 12 carbon atoms in its chemical structure.

6 0
3 years ago
Read 2 more answers
Scientists calculated the net primary productivity at two different forest sites. Both forests have the same gross primary produ
Katen [24]

Answer:

The answer is C.

Explanation:

Net Primary Productivity is a term that is used to express the difference between CO2 that is taken in by the plant with photosynthesis minus CO2 that the plant releases.

The two forest sites given in the example may not have the same biodiversity and the same species of plants so we can't be sure of option B.

Again for the same reasons, we can't be sure of option D because we do not know the specific plant species in each forest since they are in different areas.

Option A can be ruled out for the same reasons, the lack of information about the forest sites, since we do not know the death rate of the plants in either of the forests.

Option C can be true because forest A has a higher net primary productivity rate which can be an indication of lower respiratory activity hence lower CO2 production, resulting in the given higher net primary productivity.

I hope this answer helps.

4 0
4 years ago
What caused the massive erosion of the
pochemuha

Answer:

A Reduced sea turtle population due to monofilament nets

Explanation:

Hope this helped you

7 0
3 years ago
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MARK YOU THE BRAINLIEST!<br> What make a Weeping Willow a eukaryotic cells give three reason why ?
ZanzabumX [31]
1.its single celled
2.it grows in asia
3.they are long

i hope this helps! please mark as brainliest
3 0
2 years ago
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