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Art [367]
3 years ago
8

Which of the following statements is true?

Biology
2 answers:
Alexeev081 [22]3 years ago
6 0

Answer: if a common plant is in an ecosystem becomes diseased the ecosystem may become unbalanced.

Explanation:

Jlenok [28]3 years ago
5 0
<span>Let's look at all the statements:Which of the following statements is true? Parts of an ecosystem only include biotic factors such as plants and animals. - this is not true, it also includes abiotic factors, such as stones If a common plant in an ecosystem becomes diseased, the ecosystem may become unbalanced. - this is the true statement! it could be a source of food for other animals, and thus it could influence the population of other species Abiotic factors include decomposers such as fungi and bacteria. - this is false, those are biotic factors. Tundras have a high diversity of species. - this is not true - compared to the rain forest, for example, tundras are not very diverse</span>
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In the term 2pq of the Hardy-Weinberg equation. Why is the multiplication by two necessary?
Gnesinka [82]

Answer:

The correct answer is : option B.

Explanation:

Hardy–Weinberg equilibrium is a mathematical model that states that genotype percentage or frequency in a population and allele in a population remains stable or constant to generations if there are no evolutionary influences present.

Hardy Weinberg equation is :

            P²+2pq+q² = 1

Here, p² represents the frequency of genotypes dominant homozygotes (AA) in a population in equilibrium. The term 2pq represents the frequency of heterozygotes (Aa)  as there are two ways of developing heterozygous individuals either dominant from the egg and recessive from sperm or vice versa. and the term q² represents the frequency of recessive homozygotes (aa).  

Thus, the correct answer is : option B.

3 0
3 years ago
I need help on question number 17 and 18.Thank you
MArishka [77]
17=3
18=4
I'm not that sure about 17, but I think it's right
7 0
3 years ago
Which part of the nervous system takes in information from the environment?
Tpy6a [65]
Sensory receptors is the answer I found
8 0
3 years ago
Read 2 more answers
Which of the following is NOT one of the four main groups of macromolecules of living things?
spayn [35]

Answer:

D

Explanation:

polysaccharides is NOT one of the four main groups of macromolecules of living things

4 0
3 years ago
Read 2 more answers
which is a property of all ionic compounds that makes chalk particularly useful for writing on a chalkboard?
a_sh-v [17]
The property of all ionic compounds that makes chalk particularly useful for writing on a chalkboard is : Hardness and Brittleness

Those properties make chalk leaves residues on the board every time friction happen between the chalk and the board

hope this helps<span />
5 0
3 years ago
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