BIOLOGY MIDDLE SCHOOL

A community includes A. all of the living organisms in a specific place at a specific time.
B. only the plants in a specific place at a specific time.
C. all plants, animals, minerals, and water in a specific place at a specific time.
D. only the animals in a specific place at a specific time.

Answers

Answer 1
Answer: It includes all the living organisms in a specific place at a specific time :) A population is all of one species, and an ecosystem is all the plants, animals, minerals, and water.
Answer 2
Answer: the answer that you want is A.

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how does the immune system use nonspecific responses to protect the body from disease ? give two examples of responses.

Answers

The non specific response is geared to protect the body initially in a non specific way.
One example is the release of histimine that creates an inflammatory response and another is the leukocytes that rush to the injured area.

Answer:

Explanation:

The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing special proteins called antibodies. Antibodies attach to an antigen and attract cells that will engulf and destroy the pathogen. The main cells of the immune system are lymphocytes known as B cells and T cells.

East-West orbits are best for military observation,radio and television,
environmental studies,
remote sensing,

Answers

The correct answer is radio and television. East-West orbits are best for military observation, which includes radio and television. It is mainly because these East and West orbits are built to be a satellite for the signals that are needed by the radios and televisions. 

Yeast and sugar are added to water, the gas produced is captured, and its volume is recorded. Which variables should be held constant during this investigation?i know the answer, just need an explanation as to why

Answers

The amount of yeast, sugar and volume of water used - to ensure the results are unbiast. ONE of the things above should be changed, to ensure there are differences that occur, but the other two must be maintained.

It is warmer at the equator than at 80° N because _____.the equator is closer to the sun
the equator receives more sunlight
the sun's energy is spread out over a smaller area at the equator
the sun's energy is spread out over a larger area at the equator
---


What causes seasons?
the earth's rotation
the earth's tilt
the curved surface of the earth
the earth's orbit around the sun
---


Warm air _____.
cools as it rises, then sinks back down
keeps rising until it leaves the troposphere
cools as it sinks, then rises into the atmosphere
does not move
--


Wind is caused by ___.
the earth's tilt
the Coriolis effect
temperature differences
humidity
--


Choose all the answers that apply.

Clouds:
form from condensation
reflect sunlight back into space
trap sunlight in the atmosphere
cause precipitation
are caused by the Coriolis effect
---


Which of the following statements is true?
Low pressure is usually means nice weather.
Air pressure is the same over the entire earth.
Worldwide winds are caused by rising air at the poles and sinking air at the equator.
Coastal breezes occur because water heats and cools more slowly than land.



PLEASE AT LEAST TRY PLEASE?

Answers

Answer:

1- Option (b)

2- Option (b)

3- Option (a)

4- Option (c)

5- Option (a), (b) and (d)

6- Option (d)

Explanation:

The equatorial region receives more sunlight than the polar region, so the places near equator are warmer than the places at the polar region, including the 80 degrees N latitude.

Seasons are caused due to the tiltation of the earth and the relative position of earth with respect to the sun.

Due to the increasing temperature near the earth's surface, the warm air rises up in the atmosphere, being less denser and eventually sinks due to the lowering temperature.

When there occurs the temperature difference between two different regions, then wind is generated blowing from the region of higher pressure to the region of low pressure.

Clouds are formed when condensation process takes place and are a good albedo that reflects significant amount of sunlight back into the space. Clouds during condensation starts precipitating in the form of rainfall, snowfall and fog.

The difference in the temperature occurs because of the unequal heating of the land surface and the ocean. The land area gets heated up faster and more readily, in comparison to the ocean. So the sea breeze as well as the land breeze occurs. Sea breeze blows from the ocean surface to the land area, whereas land breeze blows from the land area towards the oceans.
1. The equator receives more direct sunlight because of the tilt of the earth

2. The earth's tilt resulting in uneven heating and cooling of the earth

3. Cools as it rises, and cool air then sinks

4. Form from condensation, Reflect sunlight back into space,  
Cause precipitation, you might want to do a little research on this one because technically greenhouse gases such as CO2 trap sunlight in the atmosphere so I think I got them all

5. And Coastal breezes one :)

Why might the population of prey increase over time, while the population of predators remains high?

Answers

an example would be us humans we captive breed them then kill them. So they could adapt and avoid the predator but still get hunted down.

What must be done to ensure DNA made is a laboratory is radioactive

Answers

Answer:

Incorporating radioactive nucleotide must be done to ensure DNA made is a laboratory is radioactive

Explanation:

Radioactive nucleotide are generally used in the detection of some specific nucleic acid series. These are the typically incorporated inside the DNA and RNA series for detection as well as analysis. These nucleotide involves radioactive phosphates, digoxygenin, biotin, fluorophores and enzymes. It was first used in 1935 by George de Hevesy. P32 and S35 labelled as the nucleic probes and now the phosphates is being in large use. Hydrogen can also be used in-situ hybridisation which gives greater resolution and less sensitive in long exposure.

Incorporating radioactive nucleotides
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