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Deffense [45]
3 years ago
5

Earth is made mostly of metals and rocks. where did this material come from?

Biology
1 answer:
Viktor [21]3 years ago
6 0
 comes  from the earth's crust<span />
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Which is true of prokaryotic and eukaryotic cells?
bazaltina [42]

Explanation:

the answer to this question is prokaryotic cells lack memebrane bound organelles and eukaryotic cells contain membrane bound organelles

5 0
2 years ago
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Describe how proteins are made, packaged and transported within the cell.
nalin [4]
Lol . To answer your question, proteins in animals are made by the consumption of food. They are packaged in a way where they are broken down and converted into energy, sugars and PROTEINS. They are transported and aided with the Golgi Apparatus. If you need more help I would just search each peice of your question individually
3 0
3 years ago
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Why do animals have a specialized form of cellular reproduction (meiosis) in addition to the much more common for used for growt
ratelena [41]

This is because the cells we need for reproduction need to be genetically different from those of the rest of the body.

Cellular reproduction

When a mother cell divides into two or more daughter cells, this process is known as cell division.  Cell division frequently takes place as a component of a longer cell cycle. There are two different types of cell division in eukaryotes: a vegetative division (mitosis), in which each daughter cell inherits the genetic makeup of the parent cell, and a reproductive division (gametogenesis), in which the number of chromosomes in the daughter cells is cut in half to produce haploid gametes (meiosis).  In cell biology, the process of mitosis, during which replicated chromosomes are split into two new nuclei, is a stage of the cell cycle. The number of chromosomes is maintained in the genetically identical cells produced by cell division.

To learn more about cellular reproduction refer here:

brainly.com/question/28013772

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5 0
1 year ago
Nadine kept track of her activities for the same three days, using an activity tracking app on her smartphone. She calculated he
pochemuha

Answer:

Gain weight

Explanation:

Data provided in the question

Average energy expenditure = 1,800 calories

Average of calories per day = 2,949

Based on the above information, the judgment is as follows

As we can see that she consumes 2,949 calories per day and her energy expenditure 1,800 calories for 3 days

Plus she should gain as

= 2,949 calories - 1,800 calories

= 1,149 calories

So by this explanation, she definitely gains the weight

4 0
3 years ago
Which event signals the birth of a star?
juin [17]

Answer:

nuclear fusion

Explanation:

When the density and temperature at the core of the gravitationally collapsing nebula reaches values when nuclear fusion is triggered and sustained, that marks the birth of the star.

7 0
3 years ago
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