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8090 [49]
3 years ago
15

Q1: How do you use a natural ecosystem?

Biology
1 answer:
shutvik [7]3 years ago
8 0
Q1 we use natural ecosystems by changing them into things like Gold courses houses etc.

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The answer is D.

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What best describes the role of molecular oxygen (O2) in aerobic respiration?
igomit [66]

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b

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Forensic scientists can match missing persons and their families by matching maternal DNA to the missing individual. Which type
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<span>mtDNA analysis is the best DNA technology to use. In DNA fingerprinting scientists run a gel electrophoresis of the subject's DNA in order to establish the banding patterns of the DNA fragments. People will always share half of their DNA with a parent. SO half of an individual's banding pattern will match half of their parent's DNA banding pattern. If someone is missing is found then scientists can compare the DNA fingerprint or banding patterns to see what the likelihood is of them being related.</span>
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3 years ago
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What are DRIs and why are they preferred? Why are they not on food labels?
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DRIs is the general term for a set of reference values or guidelines that are used to plan and asses nutrient intakes of healthy people. These values which vary by age and gender include: 

- Recommended Dietary allowance (RDA): average daily level of intake sufficient to meet nutrient requirements of about 97 - 98% of healthy people.

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- Tolerable Upper Intake (UL): Maximum daily intake unlikely to cause adverse health  effects.

DRIs are not necessarily found on labels because there is no law requiring that they must be placed there.

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If the period of a wave decreases, its frequency must
Yuri [45]

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D - increase

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