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balandron [24]
3 years ago
9

A piece of granite is determined to contain 50 grams of U-238. After on half-life, how much material

Biology
2 answers:
zvonat [6]3 years ago
5 0

Answer: Hydrogen-3 or tritium as it is commonly called, has a half life of 12.32 years. If you start with 20 grams of it, how much will remain after 25 years? Ending Amount = Beginning Amount / 2 (time / half-life) Ending Amount = 20 / 2 (25 / 12.32) Ending Amount = 20 / 2 (2.0292) Ending Amount = 20 / 4.0818. Ending Amount = 4.8997 grams

Explanation:

MrMuchimi3 years ago
5 0

Answer:

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Explanation:the ont

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Resilience may include having traits such as a positive self-concept, sociability, intelligence and scholastic competence, auton
swat32

Answer:

Individual-level protective factors

Explanation:

Psychological resilience is the ability of the humans to recover very quickly from the difficult situation mentally and socially.

The traits shown by the resilient person are due to self-esteem, problem-solving skills, good health, self concept and many others which are considered individual-level protective factors as these factor help increase the well being of the individual.

Thus, individual-level protective factors are the correct answer.

5 0
3 years ago
Which of the following pairs work together to form the neuroendocrine
Sphinxa [80]

Answer:

D

Explanation:

The neuroendocrine system is made up of the cell in the body that ‘sit’ between the nervous system and the endocrine system. These cells are like the pituitary gland, islets cells of the pancreas, thyroids, and etcetera. They receive nerve impulses  from nerves connected to them. The impulse then triggers them to release respective hormones into the blood.

8 0
2 years ago
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Being born with the genes, and evolving to reach food easier

Maybe, IDK Tbh XD
5 0
3 years ago
Marianne is conducting an experiment on homeostasis in paramecium, which is a type of single-felled organism. Which of these obs
Drupady [299]

Hello. You did not present the answer options, which makes it difficult for you to receive a specific answer. However, I will try to help you in the best possible way.

One of the most common evidences that a paramecium is maintaining homeostasis is the pumping of water from the vacuoles present in its body.

The paramecium is a protozoan that lives in aquatic environments, mainly those composed of fresh water. The problem with this environment is that water is able to enter the paramecium organism in large quantities and this can promote the disruption of the organism through lysis of the cell. In this case, homeostasis must act quickly and pump water out of the body, through the cell vacuole.

Homeostasis is a regulatory system of the organism, which must promote the balance of the organism, whenever any external or internal factor tries to harm this balance.

8 0
3 years ago
!!PLEASE HELP IMMEDIATELY!! a snapping turtle has 52 chromosomes. which statement correctly compares the number of chromosomes i
IrinaK [193]

Answer:

The body cell has 26; the sex cell has two.

Explanation:

I think sorry if I'm wrong.

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3 years ago
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