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3 years ago

While an important source of freshwater, groundwater is not as widely used as rivers and springs.

Biology

2 answers:

andre [41]3 years ago

7 0

Answer:

false

Explanation:

Andreyy893 years ago

6 0

False!

Groundwater is widely used as a source of freshwater. Groundwater is water under the surface of the Earth. It is a cheap source of freshwater, and also, not as much vulnerable to pollution such as surface water. Because of that, it can be commonly used as a source of freshwater.

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A biologist is studying the possible role of earthworms on the fertility of farm soils. As part of this research, the number of

dimaraw [331]

Answer:

Taking more samples from different parts of an acre.

Explanation:

Validity and accuracy of the data is crucial for any serious research. In this particular case, the most accurate data would be obtained if earthworms would be counted on the whole acre. Of course, this would consume lot of time, people, money etc. That's why methods for estimation are used. Estimation best works with large number of samples. Since one acre equals over 4000 square meters, taking only five samples from such a big area is simply not enough for obtaining valid data.

One of the possible ways to improve estimation is to take more samples per acre while avoiding taking adjacent samples because it could be possible that number of earthworms in one part of an acre is increased (or decreased) for any reason, which would lead us to wrong conclusion.

8 0

3 years ago

This food web represents a community along the coast of Alaska.

jeyben [28]

Answer:

Oh wow thats cool...... you can just look it up on the internet. There are the most amazing tricks and things on there.

5 0

2 years ago

This tutorial will take you step by step through the question. Individuals with the genotypes Aa Bb CC Dd and Aa bb Cc Dd are cr

Mrac [35]

Answer:

The correct answer is -

a) 1/16

b) 1/64

c) 1/32

Explanation:

According to the law of independent assortment, each allele of a particular gene has equal chances of getting inherited into the gametes.

In a Mendelian cross of Aa x Aa would give;

AA = 1/4,

Aa = 2/4 and

aa = 1/4

The result of the cross between AaBb x AaBb would be 1/16 due to the fact that probability is still the same AA = 1/4, BB = 1/4 therefore, AABB = 1/16 = 1/4× 1/4.

Now based on this crossing the following:

AaBbCCDd x AabbCcDd.

Take each allele as individual

Aa x Aa would give; AA = 1/4, Aa = 2/4 and aa = 1/4

Bb x bb would give; BB = 1/2, bb = 1/2

CC x Cc would give; CC = 1/2, Cc = 1/2

Dd x Dd would give; DD = 1/4, Dd = 2/4 and dd = 1/4

Then the probability of progeny of the following would be:

a) the probability of AaBbCcDd = 2/4 x 1/2 x 1/2 x 2/4 = 1/16

b) the probability of aabbCCdd = 1/4 x 1/2 x 1/2 x 1/4 = 1/64

c) the probability of AabbCcDD = 2/4 x 1/2 x 1/2 x 1/4 = 1/32

6 0

2 years ago

madreJ [45]

The pattern of inheritance of the offspring of a hemophiliac father would be heterozygous.

<h3>What is Hemophilia?</h3>

Hemophilia is defined as the sex–linked disorder that occurs due to an abnormality of the X chromosome.

A father that has hemophilia would be affected only on his X chromosome and can only pass it to their children making them carries.

This is because the children would inherit only one X chromosome from their father and a healthy X chromosome from their mother.

Learn more about chromosome here:

brainly.com/question/269366

#SPJ1

8 0

1 year ago

Which component of a virus is lacking in a cell?

m_a_m_a [10]

Capsid is the component of a virus that is lacking in its cell

A capsid is the protein shell that surrounds a virus. Capsids functions by protecting the nucleic acids of a virus while interacting with the host environment. Capsids are made up of many oligomeric structural subunits that contains the protein; protomers. Capsids are generally grouped based on their structure. The common ones are helical and icosahedral.

4 0

3 years ago