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viva [34]
3 years ago
12

which of the following is true about a zygote? a) a zygote is the first cell of a new organism. b) a human zygote has 23 pairs o

f chromosomes. c) a zygote is produced through fertilization
Biology
1 answer:
Damm [24]3 years ago
8 0
C, a zygote is produced through fertilization. hope this helps
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Vitamin K is needed by the body to allow blood to dot. Most of the vitamin K in humans is produced by bacteria living in the lar
Norma-Jean [14]

Answer:

its not a or d I know that

Explanation:

In adults aged 20 and older, the average daily vitamin K intake from foods is 122 mcg for women and 138 mcg for men. When both foods and supplements are considered, the average daily vitamin K intake increases to 164 mcg for women and 182 mcg for men.

8 0
3 years ago
The moth species Biston betularia has two color morphs, or variants. One has a speckled white and black color, while the other i
Oksana_A [137]

Answer:

D. Changes in the environment changed each morph's ability to evade predation in different ways.

Explanation:

The moth species<em> Biston betularia</em> has two color morphs, or variants. One has a speckled white and black color, while the other is all black. Over the period of time, the distribution of moths dramatically changed between 1900 and 1950 in such a way that black morph became dominant but speckled morphs became very much declined in abundance. The reasons behind this change was heavy industrial pollution in UK between 1900 and 1950.

When the environment became very polluted, dark and blackish, the speckled moth had more chanced of getting eaten by predators thats why they declined in number  as compared to black morphs. On the other hand, backgrounds of grime and soot made black morphs less visible to the predators and they survived well. This is an excellent example of natural selection that only those specie better survive that have the ability to cope better with adverse environmental fluctuations.

Therefore, option D is best option.

Hope it help!

8 0
2 years ago
PLEASE HELP 30 POINTS!!!!! PLS ANSWER ALL
navik [9.2K]

Answer:

a b c d e f g

Explanation:

7 0
3 years ago
Edward Jenner’s smallpox inoculation experiment was based on an observation by a dairymaid that she could not get smallpox becau
Rashid [163]

Answer : Option A) He asked what would happen if he deliberately inoculated someone with cowpox fluid from another person.

Explanation : Edward Jenner wanted to know what would happen if he deliberately inoculate the cowpox fluid from some person to another. He tested this experimental results and later on came up with the hypothesis. Which roughly state that someone will not get smallpox because they already had cowpox.

5 0
3 years ago
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The thermosphere protects the Earth from UV radiation coming from the Sun. Please select the best answer from the choices provid
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That would be false. The Ozone layer is what protects Earth from UV radiation. The Ozone is part of the Stratosphere.

6 0
3 years ago
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