BIOLOGY MIDDLE SCHOOL

What is the energy source that powers plate movement? a. magma and lavab. earths magnetic field
c. the sun
d. earths hot interior

pls help

Answers

Answer 1
Answer: the correct answer is c
Answer 2
Answer:

Answer:

the answer is D

Explanation:

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a mutation that
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Answers

Answer:

first option  nuetral

second option is benificial only if it required mositure

third harmful decreasing the sexual trait will effect the survial rate and it all depending how on way it can reproduce

icreasing white sprot is benifical

Explanation:

______________ succession occurs when you start with barren rock and no soil.a. Primary

b. Secondary

c. Annual

d. All of these

Answers

A)primary because it starts with no soil so that will be the primary if you still don’t get is that it still doesn’t have soil do it will be the first step or primary

jenny measures the outside temperature as 16 degrees celcius,61 degrees Fahrenheit. she observes precipitation falling from the clouds in a solid form.what type of precipitation is jenny most likely observing. A)hail B)rain C)sleet D)snow

Answers

Jenny is most likely seeing sleet dued to the fact it must be 32 degrees Fahrenheit to freeze and turn into a solid snow/ ice.
Rain. Since it is 16 degrees C it is almost 100% sure to be rain. Too warm for sleet, which is possible around, you can guess, 0 C or 32 F (sleet can be formed when surface T is around 5 C, this may variate.

How does selective breeding support Darwin's hypothesis about evolution?

Answers

Over the year of evolution, only the strongest survived and reproduced. So, having this happen over millions of years, species got stronger and stronger. For example, if there were two species of monkey's, one with fangs, one without fangs. The species with fangs would survive, and soon all monkeys would develop fangs because all the monkeys without them would die and not reproduce. That's how the evolved into what animals are today.

Answer:

It does not support his hypothesis but it gave him a clue about selecting desired characteristics. Replace the breeder by the opportunities that are in the environment and you have it.  Breeders depend on variations to deliver new characteristics. If reproduction did not vary between generations, breeders will not get any new characteristics

according to David Chan,

Bones in bird's wing and a human's arm are similar in structure

Answers

They actually are not, due to shape.
They are similar. This similar structure is referred to as homologous structure.

Which of the following is an example of natural erosion?a.
ice forming in cracks of rocks
b.
acid rain falling on sidewalks
c.
waves washing over rocks on the beach
d.
water washing away soil in an area used by off-road vehicles

Answers

The most natural form of erosion in the examples is C, waves washing over rocks on the beach. Formation of ice is not a form of erosion and options C and D involve factors introduced by humans. In B, this is the acid rain, and in D it is the erosion of soil that occurs due to the off-road vehicles.

Answer;

C. waves washing over rocks on the beach

Explanation;

-Erosion is a natural process that forms part of the lifecycle of sites, resulting from the action of wind or water. It is a geological process in which earthen materials are worn away and transported by natural forces such as wind or water.

-Example of erosion; Wind carries small pieces of rock awayfrom the side of a mountain, waves washing over rocks on the beach, etc.
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Someone help me please