BIOLOGY MIDDLE SCHOOL

Which of the following is one of the basic elements of life?A. Sodium
B. Water
C. Nitrogen
D. Air

Answers

Answer 1
Answer:

Answer:

Nitrogen is one of the basic elements of  life.

Explanation:

  • Nitrogen is one among the four basic element of life which is a chemical element. The symbol of nitrogen is N with 7 as its atomic number. In 1772, it was isolated and discovered by Scottish physician named Daniel Rutherford.
  • As nitrogen is an inert gas, it can be used instead of air and also reduce oxidation of materials. It is also used in the manufacture of fertilizers, explosives etc.

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2.Patsy is studying different kinds of weathering. She has four pans full of dried modeling clay. Some she adds water to. Some she freezes overnight, then lets thaw, as summarized in the table below: PanAdded Water?Froze the pan?1yesyes2yesno3noyes4nono Then she compares the clay in all four of her pans. The clay in pan #4 was the same at the end of the experiment as it has been at the beginning. The clay in pan #1 had changed and broken up more than the others.  Which of the following conclusions could Patsy have made? Frozen clay takes up more space than thawed clay does. Adding water to clay and then freezing it breaks the clay apart more than either freezing it or adding water to it alone. Adding water to clay and then freezing it helps plants to grow in the clay more than either freezing it or adding water to it alone. Wet clay takes up more space than dry clay does.
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Name four behaviors that animals must use to survive

Answers

Smelling, seeing, quickness, stealth

Answer:

Understanding how genes and the environment come together to shape animal behavior is also an important underpinning of the field. Genes capture the evolutionary responses of prior populations to selection on behavior. ... Many scientists study animal behavior because it sheds light on human beings.

what do you call the phenomenon When you have a different concentration of materials on the inside and outside of the cell

Answers

Answer: Osmosis

Explanation:

Osmosis can be defined as the phenomenon in which there is a difference in the concentration of materials on the different sides of the cell.

The concentration inside the cell is different and the concentration outside is different.

The membrane in between is the semipermeable membrane which allows the movement of certain molecules.

The movement of solvent takes place from a region of their higher concentration to the area of lower concentration via semipermeable membrane.

Answer: Osmosis

Definition: A process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane.

How is a cell like a house?

Answers

The arctic fox has adapted to its environment in a number of ways. Its fur turns white in winter and it does not begin to shiver until temperatures plunge below 10 degrees Fahrenheit. Global warming is likely to bring many changes, including an increase in mean air temperature. Over time, the arctic fox will have to adapt to this change. Which adaptation is MOST LIKELY to occur? A) Its paw pads may thicken. B) Its fur may stay white longer. C) Its tail may have thinner fur. D) Its ears may be shorter and rounder.

Answers

Answer:  C) Its tail may have thinner fur.

Adaptation is the change or alteration in the organism which imparts changes in the structure, physiology and behavior of the organism. These changes allows the organism to survive in the drastic environmental conditions.

In the given situation, artic fox being living in the cold environment Its tail may have thinner fur. is the correct type of adaptation which may allow the artic fox to survive in changing environmental conditions due to global warming. As, global warming may cause change the climatic conditions of the artic regions. The thin fur may allow the loss of heat during summer conditions.

 I believe the answer is C.

Microscopes led to the discovery that all organisms are

Answers

all organisms are made of cells

What are two adaptation that prey organisms have developed to protect them selves

Answers

one is the armadillo because it has a outer shell and two is the snake cause it has a skin that can camoflauge
colorful colours like a frog and being able to mimic their background or to look like their background. Basically camouflage. 
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