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densk [106]
3 years ago
6

Which soil horizon is located closest to the earth's crust?

Biology
1 answer:
qaws [65]3 years ago
4 0

Answer:

The C horizon is located closest to the Earth's crust. Weegy

Soil is made of air, water, organic material, minerals, and weathered rock.

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From the following, choose the factors that may produce or increase the risk of mutations.
mel-nik [20]

Answer:

High Temperature, X-rays, Radiation, Some Chemicals

Explanation:

In general, mutations happen due to some error in the DNA duplication process, however, there are certain factors in the environment that can increase the incidence rate of these genetic errors. Excessive exposure to x-rays, substances present in smoke, ultraviolet light, excessive temperature, nitrous acid and some dyes present in food, for example, can favor the appearance of mutations. In general, we can say that mutations can be caused by high temperature, X-rays, radiation, some chemicals.

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3 years ago
Which of the following materials is necessary for scientists to estimate the age of the solar system?
SCORPION-xisa [38]

Answer:

B) meteorite sample

Explanation:

The age of the solar system, derived from the study of meteorites (thought to be the oldest accessible material around) is near 5 billion years; that of the Earth is taken as 4.6 billion years. The oldest rocks on Earth are dated as 3.8 billion years.

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3 years ago
Which of the following could be a tertiary consumer?
alisha [4.7K]

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seaweed is the answer

Explanation:

GLAD IT HELPS!

3 0
3 years ago
I need the answers please
Yuri [45]

Answer:

Open circulatory system:

Relies on the heart to keep blood flowing

Used in all vertebrates

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Match each description to the appropriate biome
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desert

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