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Anarel [89]
3 years ago
6

The cell structures that break down nutrient molecules and old cell parts are known as

Biology
1 answer:
Arada [10]3 years ago
6 0

Answer:

LYSOSOMES are the cell structures that break down nutrient molecules and old cell parts

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astra-53 [7]
They use carbo dioxide from the atmosphere during the process of photosynthesis. Also, after the producers die, their organic compounds are carried on to the decomposers.
4 0
3 years ago
How do alpha and beta particles get into the body?
laila [671]

Hello!

While they do not penetrate very far into the body, they can indeed get through.

Commonly, materials that emit alpha, beta or gamma radiation get  into the body alone or with other materials which have may become contaminated.

Here are some ways these could get in:

Through breathing; It could be in the air or mixed with dust, which is in the air.

Drinking; It disolves in water, meaning the material could get in your body without you knowing.

In the soil; If soil is contaminated, and plants grow in that soil, you will get a small ammount of alpha and beta particles.

Lastly, animals; Plants and animals can become contaminated, the particles coud be taken in through consumtion.

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6 0
4 years ago
you are working with a population of snails. during the mating season, you observe that individuals in the population will only
kirza4 [7]

The statement: Allele frequencies will stay the same, but genotype frequencies will change over time is False, option B

<h3>What are dominant and recessive traits?</h3>

Dominant traits are traits which whenever the allele for such traits appear will always be expressed in the offspring.

Recessive traits are traits which are masked by the dominant trait whenever the allele for the dominant traits appear. Recessive traits are only expressed in the absence of the dominant traits.

In the snail population, the M is dominant over m and that selection acts against hom0zygous recessive individuals.

Also individuals in the population will only mate with others of the same genotype.

Overtime, it will be observed that the allele frequencies and the genotype frequencies will change over time.

In conclusion, the allele frequency and genotype frequencies of the snail population will change over time.

Learn more about  allele and genotype frequencies at: brainly.com/question/6139888

#SPJ1

Note that the complete question is given below:

You are working with a population of snails. during the mating season, you observe that individuals in the population will only mate with others of the same genotype (for example, mm individuals will only mate with mm individuals). there are only two alleles at this locus (M is dominant; m is recessive); you have determined that the frequency of the M allele = 0.4 and that selection acts against h0m0zygous recessive individuals. Consider whatbwill occur in this population overbthe course of many generations and mark A for True or B for False for each of the following statements:

Allele frequencies will stay the same, but genotype frequencies will change over time.

8 0
2 years ago
What is the leading cause of water pollution in the United States?
monitta
The leading cause is garbage and waste from people.
3 0
3 years ago
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A secondary source might be eliminated by a good researcher because
kiruha [24]
Because good researchers rely on first hand account or better said primary evidence. The reason why they rely on primary evidence is because it is usually the most reliable. Much more so than secondary or even tertiary evidence. This enables them to understand the history of a certain topic better. 
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