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Naddika [18.5K]
3 years ago
12

Why is it difficult to find the fish named after former president Barack Obama

Biology
1 answer:
xz_007 [3.2K]3 years ago
6 0
There are many fish in the world.
but it’s probably not that hard tbh.
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Difference between incomplete and complete ventilation? any 4​
Temka [501]

Answer:

Due to exchange of gases i.e. normal and abnormal.

Explanation:

The main difference between incomplete and complete ventilation is the occurrence of normal and abnormal exchange of gases. The mechanism in which the exchange of gas happens completely without any difficulty is called complete ventilation. It is the process in which the required amount of oxygen is inhaled or inspired and appropriate amount of carbon dioxide is exhaled out of the body while on the other hand, incomplete ventilation is a mechanism in which exchange of gases is not normal.

7 0
3 years ago
An element's atomic number is 49. How many electrons would an atom of this element have?
erma4kov [3.2K]

49; Number of Electrons = Number of Protons = Atomic Number

7 0
3 years ago
The solid below is made of twelve identical
Lesechka [4]

Answer:

Hewo! Mizuki here to help! The correct answer would be option A!

Explanation:

Oki! So.... we find out the length, width, and height first!

The equation for finding the length: 36 ÷ 2

And the answer will be 18, make sure to memo it if your following along!

The equation for finding width: 36 ÷ 3

And the answer will be 12, so yeah(I tried it with 2 because it was 2 prism long, but it turned out to be a number not on the list [3888])

The equation for finding height: 24 ÷ 2

And the answer will be 12!

Soo... we multiply the length, width, and height!

18 x 12 x 12 = 2592

Since 2592 in on the list, that will be your answer!

6 0
3 years ago
What has caused a large amount of desertification in tropical areas?
ziro4ka [17]

Answer:

i think over irrigation is the answer

5 0
2 years ago
• describe how heterozygote advantage and frequency-dependent selection promote balanced polymorphism and maintains genetic dive
cestrela7 [59]

Answer;

Heterozygote advantage occurs when heterozygotes have a higher fitness than do both homozygotes. In frequency-dependant selection, the fitness of a phenotype declines it it becomes too common in the population.

Explanation;

The heterozygotes have both alleles, which is needed for genetic variation. Heterozygotes are essential for there to be genetic variation in a population. In other words it is when When a single copy of a disease allele doesn't result in a disease but instead is good for the person or organism that carries it, we say that allele has a heterozygote advantage. For example a sickle cell trait, which protects against malaria in heterozygotes, but causes a deadly disease in homozygotes.

-Frequency-dependent selection occurs when the fitness of a genotype depends on its frequency. It is possible for the fitness of a genotype to increase (positively frequency-dependent) or decrease (negatively frequency-dependent) as the genotype frequency in the population increases.

8 0
3 years ago
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