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Svetlanka [38]
3 years ago
13

In a cross section of soil, the Bhorizon consists of

Biology
2 answers:
sveticcg [70]3 years ago
8 0

Answer: A

Explanation:

Sergeu [11.5K]3 years ago
7 0
I think the answer is c
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Using complete sentences, answer the questions below. please help!
Art [367]

An atom is the smallest known unit and it is present in all the matter. The space occupied by atom is divided into two components: the nucleus and orbitals. The nucleus is the center of the atom, and orbitals surround the nucleus.

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Protons are positively charged particles within atoms. Each atom has at least one proton. The number of protons determine the identity of an atom.Protons reside in the nucleus of the atom.

Location of Electron-

Electrons travel around the nucleus in the orbital. Electrons are negatively charged particles. In a neutral atom, the number of electrons and protons are same. Though they are much smaller than protons but have the same strength charge.

Location of Neutrons-

Neutrons are located with protons in the nucleus. They have no charge and have the same mass as protons. Not all atoms have neutrons, and the number of neutrons is not usually the same as protons or electrons.

Part B-

I agree with Jane's statement as an aluminium atom has a dense central nucleus surrounded by negatively charged electrons, The protons and neutrons are closely packed in the center an 13 electrons are surrounding this center.

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3 years ago
Need help Plz!!!!
kotegsom [21]
A teacher writing to a confused student.

bacteria are microscopic (very tiny) organisms that are unicellular (made up of a single cell). One fundamental difference is that bacterial cells lack intracellular organelles, such as mitochondria, chloroplasts, and a nucleus, which are present in both animal cells and plant cells.
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3 years ago
How many times do humans blink a day
lana66690 [7]
Around 28800 times a day. Hope this helps :)
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3 years ago
This recolonization of an area that has been totally destroyed, is an example of... A. climax succeesion B. Pioneer Succession C
d1i1m1o1n [39]

Well Primary Succession means you are the first organisms of that area after it is destroyed completely or if it's new. Secondary Succession is when an area is not destroyed completely but the organisms that remain colonize the area again. I believe it's C.

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PLEASE ANSWER 60 POINTS
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Answer:

Allele frequencies change randomly each generation is the example of genetic drift.

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