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horsena [70]
3 years ago
11

Which chemical property most contributes to soil formation

Biology
1 answer:
andrey2020 [161]3 years ago
7 0

<u>Answer:</u>

Humus increases the soil's porosity and water-holding capacity and helps to buffer rapid changes in soil acidity. Humus also helps the soil to hold its nutrients, increasing its fertility. Fertile soils are rich in nitrogen, contain a high percentage of organic materials, and are usually black or dark brown in color.

<u>Explanation:</u>

*can i be the brainliest*

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1. Madison has type A blood, and so does her sister Abi. Her sister Marley has type O blood. A. What are Madison's parents' bloo
Sphinxa [80]

Answer:

A) Madison’s parents’ blood types may be either A & 0, or A & A.

B) Depending on her parents’ genotypes, Madison’s genotype may be either AA or A0

Explanation:

Since the A allele is dominant with respect to the 0, a person with blood type A may have either one (A0 genotype) or two A alleles (AA genotype). In contrast, a person with blood type 0 may only have two 0 alleles (00 genotype).

Because one of the sisters has type 0 blood, we have to assume that both of her parents have at least one 0 allele. There are two situations which may give rise to the described scenario (see Punnett squares):

Alternative 1: One of the parents has A blood type (A0 genotype), and the other has 0 blood type (00 genotype). Madison’s genotype may only be A0.

| 0 | 0

——————————

A | A0 | A0

——————————

0 | 00 | 00

Alternative 2: Both parents have A blood type and A0 genotypes. Madison’s genotype may be either A0 (probability of 2/3) or AA (probability of 1/3).

| A | 0

——————————

A | AA | A0

——————————

0 | 0A | 00

7 0
3 years ago
Which of the following are functions of lymphoid tissue? A. house and provide a proliferation site for lymphocytes B. house and
Genrish500 [490]

Answer:

The correct answer is option D. A and C.

Explanation:

Lymphoid tissue is the body part that is an essential part of the immune system that provides immune response against different infection or pathogens and protects from these foreign bodies. These tissues are present in all over the body that includes spleen, adenoids, tonsils, lymph nodes and other parts.

Lymphoid tissues or organs are the sites of the proliferation of the macrophages and lymphocytes. These structures also assist in furnishing surveillance points for lymphocytes and macrophages.  

Thus, the correct answer is option D. A and C.

6 0
3 years ago
What is the difference between the axial and appendicular skeleton?
Serga [27]

Answer:

C.

Explanation:

The axial skeleton include the vertebrae, sacrum, coccyx, ribs, and sternum. The main focus of these is to protect the vital organs. The appendicular skeleton is made up of pectoral and pelvic girdle along with forearms, hands, feet, ankle. The main purpose, movement.

8 0
3 years ago
Imagine you are performing a cross involving seed color in garden pea plants. What F1 offspring would you expect if you cross tr
ehidna [41]

Answer:

B. 100 percent yellow seeds

Explanation:

When a gene has two alleles and one allele is dominant over the other, the dominant allele is expressed in the heterozygous state and the expression of the recessive allele is masked. According to the given information, the allele for yellow seed color is dominant over the allele for the green seed color.

Let's assume that the allele "Y" gives yellow color to the seeds while the allele "y" is responsible for green seed color. A cross between two pure breeding yellow seeded (YY) and green seeded (yy) plants would produce all the yellow seeded progeny with genotype "Yy".

YY (Yellow) x yy (green) = Yy (yellow)  

7 0
3 years ago
What is the term used for the elements and compounds before a chemical reaction takes place?
alexandr1967 [171]

Explanation:

Before a chemical reaction, the elements and compounds which are about to take part in the reaction are known as reactants.

And, when the chemical reaction takes place between the given elements and compounds then they change into products.

For example, we take sodium and chlorine elements and before any chemical reaction they are the reactants.

But when a chemical reaction takes place between sodium and chlorine then it results into the formation of sodium chloride which is the product.

7 0
3 years ago
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