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chubhunter [2.5K]
2 years ago
8

Our atmosphere contains 78% free

Biology
1 answer:
Alenkinab [10]2 years ago
8 0

Answer:

nitrogen

Explanation:

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Galaxies are groups or systems of:
Dmitry [639]
Heyy,

I think the answer is A planets

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A botanist discovers a new species of land plant with a dominant sporophyte, chlorophylls a and b, and cell walls made of cellul
olchik [2.2K]

Answer:

e. spores

Explanation:

In the given question, the characteristics of a plant are mentioned which are the dominant sporophyte, cell wall and the Chl a or b.

It is mentioned that the plant has a dominant sporophyte therefore it produces the spores during its life cycle. The other features like the endosperm, seeds, flowers are the characteristics on the basis of which the plant can be characterised as they differ in the plants.

Since the production of spores is a characteristic feature of the sporophyte, therefore, it will be least considered by the botanist to discover a new species.

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3 0
3 years ago
A large depression formed by the collapse of volcanic cone is called a
Likurg_2 [28]
A large depression formed by the collapse of a volcanic cone is called a caldera 
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What is the advantage of stopping mitosis at metaphase when making a chromosome spread?
Basile [38]
The chromosomes are in their condensed, highly coiled form, where they can easily fall without overlapping and staining will show a banding pattern.
3 0
3 years ago
What is the correct definition of antibodies?
Softa [21]

Answer: The answer is  C

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 Antibodies or otherwise called Immunoglobulin are special protein that are produced by certain lymphocytes which produces antibodies which can affect the invading bacteria or other foreign  bodies called the antigens  or other toxins in a number of ways . Certain antibodies known as agglutinins make bacteria harmless by causing them to clump together. The lysins dissolve the outer coats of bacteria, the antitoxin neutralize the toxin of bacteria  while precipitins precipitate the toxin as insoluble and therefore , convert them to a harmless compound. Antibodies are always produced by the immune system.

4 0
3 years ago
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