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r-ruslan [8.4K]
3 years ago
9

Which correctly identifies the location of the asteroid belt?

Biology
2 answers:
Blababa [14]3 years ago
8 0
I think wil be B yerrrrrrrr
Fittoniya [83]3 years ago
7 0

Answer: The correct answer would be B

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Plant photosynthesis and the consumption of plants by animals is best explained by what unifying principle of life? A) All livin
seropon [69]

Answer:

The correct answer is option A) "All living organisms use energy".

Explanation:

Even though living being use different strategies to obtain energy, an unifying principle among them is that all living organisms use energy to live. Plant use photosynthesis, which allows them to use sunlight, carbon dioxide and water to obtain energy. This classifies plant as producers, whereas animals that consume plants are primary consumers, animals that consume the animals that consume plants are second consumers, and so on.

5 0
3 years ago
Explain the process of homeostasis through BOTH negative and positive feedback
kotegsom [21]
Homeostasis is maintained by negative feedback loops within the organism. In contrast, positive feedback loops push the organism further out of homeostasis, but may be necessary for life to occur. Homeostasis is controlled by the nervous and endocrine systems in mammals.
7 0
3 years ago
An element has a half-life of 30 years. If 20 mg of this element decays over a period of 90 years, how many mg of this element w
Vlada [557]

Answer:

2.5 mg

Explanation:

<em>The half-life of a substance is the time required for one half of the substance to decay. In order words, it is the time it will take for a substance to decay into  half of its initial size.</em>

For a 20 mg element with a half-life of 30 which decays over a period of 90 years;

The first 30 years, 10 mg would have decayed, remaining 10 mg

The second 30 years, the remaining 10 mg would have decayed to 5 mg

The third 30 years, 5mg would have decayed to 2.5 mg.

Hence, in 90 years, 20 mg of the element would <u>remain only 2.5 mg.</u>

7 0
3 years ago
If you cross two organisms that are heterozygous for a trait, what percent of
brilliants [131]

Answer:

25%

Explanation:

Here's an example: two chickens have the phenotype of white feathers and brown feathers. What percentage of the chicks will have the recessive color? First, you have to see the parents' phenotypes. Draw a punnet square. Put one of the parent's phenotypes (w and B) on the top, and the other parent's (w and B) on the right side going down. Whichever trait is dominant (brown) MUST be capitalized. Then, cross the two parents. first box on the top left would read 'ww.' The one below it is 'Bw' (put the dominant first). The right top is 'Bw' and the one below it is 'BB'. So if there were 4 offspring, these would be their genotypes: 'ww', 'Bw', 'Bw', and 'BB'. The only offspring that would have the recessive trait is the 'ww' child, because dominant overpowers recessive. So 25% would have the recessive trait and 75% would have the dominant trait.

7 0
3 years ago
What happens to the growth of an onion plant if the onion bulb is placed in a dark cupboard?
Travka [436]

Answer:

<em>here's your answer!</em>

4 0
4 years ago
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