BIOLOGY MIDDLE SCHOOL

What three elements are likely to be found in a sample of soil and rocks?

Answers

Answer 1
Answer: Most likely clay, silt and sand are to be found in samples of rocks.
Answer 2
Answer:

Answer:Most likely clay, silt and sand are to be found in samples of rocks.

Explanation:

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Technician A says that the oil control ring scrapes oil off the cylinder wall with each downward piston stroke. Technician B says that a typical oil control ring consists of two separate pieces. Who is right?A. Technician B only
B. Both Technicians A and B wrong answer
C. Technician A only
D. Neither Technician A nor B
p.s "both"is wrong

Answers

Answer:

C. Only tech A is correct

Explanation:

Oil control rings are designed differently than compression rings. A typical oil control ring consists of three separate pieces: two very thin metal rings called scrapers, and a spacer ring called an expander placed in the groove between them.

How does phagocytes protect the body 1They produce mucus that traps germs
2 They eat infected and foreign cells
3 they produce fever which slows germ growth
4 they increase blood flow to infected areas

Answers

B. They eat infected and foreign cells.

Answer:

2 They eat infected and foreign cells

does anyone have any ideas (easy) on cell simile projects. busy week but due tomorrow.HELP

Answers

A city, a factory. Just some ideas. If you're talking about the same project I did in Biology. 
you can make clay models in a box explaning different types of cells

How do animals obtain the nitrogen they use to make proteins and nucleic acids? A. by consuming plants or other animals


B. by absorbing ammonia from bacteria growing in the roots of plants

C. by breathing the nitrogen present in the atmosphere

D. by absorbing nitrogen found in the soil

Answers

The correct statement that explains how animals obtain the nitrogen they use to make proteins and nucleic acids is:

  • by consuming plants or other animals.

What is the nitrogen cycle?

It is the biological process of plants, animals, and microorganisms and abiotic light, soil characteristics, among others, is based on the supply of nitrogen in living beings.

Characteristics of the nitrogen cycle

  • Biological fixation is achieved through symbiotic bacteria found in plants, in addition to absorbing nitrogen produced from the soil.

  • Animals obtain the nitrogen they need by feeding on plants or animals that contain nitrogen, to produce amino acids, proteins, nucleic acids and DNA.

Therefore, we can conclude that Nitrogen enters the food chain through the nitrogen cycle when plants and vegetables remove it from the soil; then it passes to herbivorous and carnivorous animals.

Learn more about how animals obtain the nitrogen here: brainly.com/question/316279
I think it would be A. Because plants have bacteria on their roots that take the free nitrogen in the air from the soil and turn it into usable nitrogen. Animals could get usable nitrogen from eating plants since they have bacteria that make it. Then if an animal eats an animal that ate the plant, then it could get that nitrogen. But i am not completely sure though. I just learned this recently. I hope this helped :)

How is friction harmful when riding a bike?

Answers

Friction helps stop a bike when you use the brakes, but it can be harmful by slowing your speed down, if you hit the brakes hard at the sudden moment, you could possibly tumble and or fall. It also causes heat, so if not used correctly, that can be an injury. If you were to fall from the sudden stop, you could possibly hit the ground which can cause a knee injury and or scrapes.
Friction is harmful, because if you fall off a bike and friction occurs, you could get scraped/burned BADLY, or if you go on too high of a speed, your tires could burn off due to friction.
I hope I helped! =D

What are 4 basic needs all living things must satisfy

Answers

shelter food water and homeostasis 

Here you go: Homeostasis, Reproduction, Metabolism, Growth, Response to enviroment hope this helps!!
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