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3 years ago

Whats up fffffff fffffffffffffffffffffff ffffffffffffffffffffffffffff fffffffffffffffff

Biology

2 answers:

fomenos3 years ago

6 0

What’s with all the f’s

Anettt [7]3 years ago

6 0

whats up thanks for the free points!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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How many factors does a scientist want to differ between the experimental and control groups?

EastWind [94]

Answer:

1 factor deffer which is independent variable which is controled in control groups

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3 years ago

What would be the result if you had a hypotonic solution with a cell in it?

nadya68 [22]

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1 year ago

List three reasons why biodiverstiy conservation is important

svlad2 [7]

Answer:

The result of loss of topsoil are loss in fertility of soil, loss of water, crop production and hardened soil surface. Therefore, the correct answer to the above question is option A, B, C and D.

Explanation:

When there is a loss of top layer of soil from the earth by any means, natural or artificial, it is known as soil erosion. The soil from one place gets detached and is transported to another area. Planting more and more trees is the one of the way to stop soil erosion as the roots of the plants hold the soil.

When the soil from area is removed there is a loss of production in crop due to various reasons. The most fertile part of the soil occurs in the uppermost part. Therefore, its removal has negative impact.

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3 years ago

15. Some Lampreys

erma4kov [3.2K]

Some Lampreys are anadromous from their lake and they migrate up rivers to spawn.

Explanation:

If the adult fish live in the sea and migrate into fresh water to spawn is known as anadromous and if the adult fish live in fresh water and migrate into salt water to spawn is known as catadromous.

An anadromous fish like salmon, smelt,shad spends most of their life in the sea and returns to fresh water to spawn. A catadromous fish like eels lives in fresh water and enters salt water to spawn.

Sea lamprey brings nutrients into fresh water and provide a source of food for various birds, fish, mammals and people. The newly transformed lamprey can live only for few months in fresh water .

The females deposit a large number of eggs in nest made by males in the streams with strong current. Spawning is done by death of the adults

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2 years ago

The _____ is a layer of the embryo, which will become the circulatory system, bones, muscles, excretory system, and reproductive

nekit [7.7K]

Answer;

Mesoderm

The mesoderm is a layer of the embryo, which will become the circulatory system, bones, muscles, excretory system, and reproductive system.

Explanation;

-The germ layers develop early in embryonic life, through the process of gastrulation. An inner layer, called endoderm, and an outer layer, called ectoderm and a middle layer called mesoderm.

-The embryonic endoderm develops into the interior linings of two tubes in the body, the digestive and respiratory tube. the lining of the follicles of the thyroid gland and the epithelial component of the thymus.

-Ectoderm develops into parts of the skin, the brain and the nervous system. Mesoderm gives rise to bones, muscles, the heart and circulatory system, and internal sex organs.

4 0

3 years ago

Read 2 more answers