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Grace [21]
2 years ago
9

The theory of continental drift says:

Biology
1 answer:
Eddi Din [679]2 years ago
4 0

Explanation:

the last option is the correct answer

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Using complete sentences, answer the questions below. please help!
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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.

Location of protons-

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.

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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.

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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
Metabolism is _____.
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Metabolism is the chemical process that occur within a living organism in order to maintain life.
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Katyanochek1 [597]

Answer:

625 ppm 50 years ago

Explanation:

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2 years ago
Whales have a pelvic and leg bone, even though they do not walk on their legs. Which term is used by scientists to describe this
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The organs are known as Vestigial organs. The evolution from land-dwelling animal to the marine animals has led whales as well as dolphins, to lose hind limbs. The pelvic and leg bone serves no purpose in them and just provide the anchorage to muscles 
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A dialysis machine can be used to remove waste from a patient's blood. Which human body system works in a similar way?
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The kidneys of human body are main component of the excretory system and removes waste. When kidneys are not capable of funtioning normally, a dialysis machine is used for removing unwanted substances from the blood. It maintains the levels of required ion, minerals and electrolyets in the blood.

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