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trapecia [35]
3 years ago
9

15 points and brainliest!

Biology
1 answer:
Allushta [10]3 years ago
3 0
The first blank is hypertonic and the second blank is hypotonic
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Calculate the angle of impact for a blood droplet whose width is 6.8 mm and length is 7.2 mm.
PIT_PIT [208]

Answer:

71°

Explanation:

To obtain the angle of impact :

The length of blood stain = hypotenus

The width = opposite

Hence,

Hypotenus = 7.2 mm ; Opposite = 6.8mm

Angle of impact, θ = sin^-1(opposite /hypotenus)

θ = sin^-1(6.8/7.2)

θ = 70.8°

θ = 71°

8 0
2 years ago
Therapeutic cloning in which embryonic stem cells are used raises concerns among some members of society. Which of these is usua
KengaRu [80]
The greatest concern is them cells

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4 0
3 years ago
Human populations in low-UV environments tend to have more lightly pigmented skin. One explanation is that the selective pressur
nikdorinn [45]

Answer:

Lightly pigmented people tend to be at higher risk of vitamin D deficiency

Explanation:

BACKGROUND KNOWLEDGE:

Human skin is the largest organ of the body which makes boundary line between environment and internal conditions.  Human skin cell produces pigment called melanin when ever it is subjected to Sun. More the melanin pigment produced more will be the skin darkens. Ultraviolet (UV) radiations also come from Sun and responsible for more pigmentation.

ANSWER EXPLANATION:

According to the question darkly pigmentation only occurs when their is high level of UV radiations. High level of UV radiations are also responsible for Vitamin D production.

People with lightly pigmented means that there environment has low level of UV radiations which are the requirement of Vitamin D production. Hence due to low UV radiations peoples with light pigmentation's are also be at higher risk of vitamin D deficiency

7 0
3 years ago
Human height is a polygenic trait. This means that the
dalvyx [7]

This means that each dominant allele "adds" to the expression of the next dominant allele. Usually, traits are polygenic when there is wide variation in the trait. For example, humans can be many different sizes. Height is a polygenic trait, controlled by at least three genes with six alleles.

5 0
3 years ago
Does our solar system have any stars at its center?
Radda [10]
Yes it does, they are everywhere
3 0
3 years ago
Read 2 more answers
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