When soil first forms over bare rock, what is it made of?

Answers

Answer 1

Answer:

Soil is formed by the process of weathering. The soil is the uppermost layer of the surface of Earth. The first formed soil contains pieces of rocks and other particles.

What is Soil?

Soil is the uppermost thin layer of material covering the earth's surface. It is formed from the weathering of large rocks. It is made up of mineral particles, organic materials, air, water and living organisms like bacteria.

The lichens are the pioneer species which invade the bare rocks and convert them into soil. They secrete acids which dissolve the rocks. This helps in their weathering and formation of soil. Mosses grow on the rocks along with the lichens to form a mat over the substratum.

Under the action of factors like heat, cold, rain, wind, and other atmospheric factors, the rock breaks down physically into the parent material of the soil.

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Answer 2

Answer:

Explanation:

Weathering and erosion produce ever smaller rock particles which,

when mixed with dust and decayed organic matter over time ,

result in different types of soil .

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The stress force that causes a mass of rock to pull or twist in opposite directions in called ______

Answers

The force produced when rocks pull in opposite directions is called shearing. Convection currents in the mantle cause tectonic plates to move.Sometimes they slide past each other in opposite directions. This region is called a strike slip fault or transform plate boundary.

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Water boils when its vapor pressure becomes equal to _________ pressure.

Answers

I believe its air pressure but im not sure

What are the products of glycolysis?

Answers

C. NADH,ATP, and pyruvate

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Answers

C. If you look at the first letter of each subject in her day, this matches the acronym. MEST = Math, English, Ss, Technology

Answer:

Explanation:

HELP PWEASE T-T How did mallard ducks get to Hawaii? Was it intentional or accidental?

Answers

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1. Which of the following occurs prior to speciation? A) Organisms of different populations join together.
B) Different species share the same space.
C) A population is divided.
D) A major change on earth takes place.

2. Which of the following must be true of their individuals if two populations are no longer the same species?
A) They do not have any of the same genes.
B) They do not share any of the same space.
C) They do not resemble each other at all.
D) They cannot reproduce successfully with each other.

3. How does speciation start to take place on a genetic level between two isolated populations?
A) Large numbers of mutations occur.
B) Allele frequencies change in different ways.
C) New genes are added to one group.
D) Recessive alleles become dominant.

Answers

1) C
A population has to be isolated for speciation
2) D
Different species are incapable of reproducing with one another
3) D
When a population is contained, the recessive alleles can become dominant within the population

The 3rd question is actually B. Allele frequencies change in different ways

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