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kotegsom [21]
3 years ago
13

Does regular exercise reduce the risk of a heart attack? here are two ways to study this question.

Biology
1 answer:
exis [7]3 years ago
3 0
Hey there,

Answer:

Exercises such as Anaerobic exercises does help to reduce the risks of heart attack and heart diseases.

Hope this helps :D

<em>~Top♥</em>
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When the air inside a school gets warmer (temperature increases) the molecules of air move faster. True or False?
sergejj [24]

Explanation:

yes this is in fact true

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3 years ago
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Which of the following should NOT be added to a compost heap? A) potato peels B) bones C) banana skins D) shrub clippings​
juin [17]

Answer:

D shrub clippings

Explanation:

this is because they don't decompose like the other choice and are not rich in nutrients

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What part of the flower contains the ovary
Andrews [41]

The answer is the Pistil

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3 years ago
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How does inbreeding alter genotype and allele frequencies?
erik [133]

Explanation:

The inbreeding process, are blood crossings between relatives who have a common ancestor. Inbreeding leads to an increase in the frequency of homozygous genotypes and a decrease in the frequency of heterozygotes. We may also note that although changes in genotypic frequencies occur, no changes in allelic frequencies are observed over successive generations of self-fertilization. The main consequence of 2 individuals sharing one or more common ancestors is that they may carry replicas (identical copies) of one or more genes present in these ancestors. And if these individuals mate, they can pass on such replicas to their offspring, generating self-sibling offspring, that is, with two identical copies of the same gene that was present in these common ancestors.

6 0
4 years ago
Several biology students are counting kernels in an ear of corn. They count a total of 420 kernels: 242 purple wrinkled, 84 purp
s2008m [1.1K]
The answer is C) 9:3:3:1

This looks like a dihybrid cross where the expected phenotypic ratio is 9:3:3:1. However, in nature, the numbers cannot be absolut. Let's check it out:
242 purple wrinkled
84 purple smooth
70 yellow wrinkled
24 yellow smooth

Divide all by the smallest number:
242 purple wrinkled / 24
84 purple smooth / 24
70 yellow wrinkled / 24
24 yellow smooth / 24

We have 
10.1 purple wrinkled which is near to 9
3.5 purple smooth which is near to 3
2.9 yellow wrinkled which is near to 3
1 yellow smooth
6 0
3 years ago
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