i need help my teacher maked this hard

Answer:

Evolution

Explanation:

Answer:

One species does not "turn into" another or several other species -- not in an instant, anyway. The evolutionary process of speciation is how one population of a species changes over time to the point where that population is distinct and can no longer interbreed with the "parent" population.

Explanation:

Answer:

He proposed that all cells come from existing cells.

Explanation:

He proposed that all cells come from existing cells, completing the cell theory.

Answer:

Disruptive selection

Explanation:

Answer:

a decrease in plankton population

Explanation:

Answer:

Plankton Populations Decreasing

Explanation:

:)

Answer:

Impact.

Explanation:

Science can be defined as a branch of intellectual and practical study which systematically observe a body of fact in relation to the structure and behavior of non-living and living organisms (animals, plants and humans) in the natural world through experiments.

In Science, the study of blood is generally referred to as serology.

Impact refers to how fast blood traveled from its source to where it landed.

This ultimately implies that, an impact is a measure of the rate at which blood travels from its source to where it lands. The four (4) phases of impact includes;

I. Displacement.

II. Retraction.

III. Contact and collapse.

IV. Dispersion.

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Generally, the cardiac cycle occurs in two (2) stages;

Diastole : in this stage, the ventricles is relaxed and would be filled with blood.

Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.

Generally, the right atrioventricular valve (AV) is also referred to as the tricuspid valve and is located on the right dorsal side of the human heart. The right atrioventricular valve (AV) comprises of three (3) leaflets (flaps) which opens and closes in order to allow for the flow of blood from the right atrium of the human heart to the right ventricle. Also, the right atrioventricular valve is saddled with the responsibility of preventing blood from flowing backward in the mammalian heart.

Answer:

Repeated growing of crops in the soil decreases the fertility of the soil as the crops use up the nutrients of the soil. ... Farmers replenish the soil of the depleted nutrition with the help of fertilizers or crop rotation. Fertilizers are chemical substances that are rich in a particular nutrient.

Answer:

a) repeated growing of crops in the soil results in decrease in soil fertility as the soil use up the nutrients of the soil .

b) as the farmers need to replenish the fertility of the soil they use chemical substances known as fertilizer . They help in maintaining and increasing the fertility content of the soil but overuse of fertilisers can harm the soil . So the fertilisers should be used in correct quantity .

Answer:

B.milder

Explanation:

Water has a higher heat capacity than soil and rock, so the ocean takes much longer to heat and

to cool than the land.

Coastal areas will generally have more moderate temperatures than inland areas because of the

heat capacity of the ocean.

Coastal regions of continents tend to have milder climates than inland regions due to the stabilizing effects of steady ocean temperatures. Thus option B is correct.

Five most important climate types are Tropical, Dry, Temperate, Continental and Polar

Tropical climate include the hot and humid zone of climate where the average temperatures  of this zone is greater than 64°F and  59 inches of precipitation per year.

Dry climate refers to  the zones which are dry as in this zone moisture is rapidly evaporated from the air leads to little precipitation.

Temperate climate refers to the  zone with warm and humid summers with some mild thunderstorms and winters.

Continental type of climate shows warm to cool summers, very cold winters with some snowstorms, strong winds etc.

Polar climate zone refers extreme cold, even in summer, the temperatures below 50°F .

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Answer:

Which statement describes the difference between photosynthesis in chloroplasts and cellular respiration in the mitochondria?

A. Photosynthesis requires reactants and products, but cellular respiration does not.

In the DNA structure if the two base pairs exchange it leads to creating a mutation in the sequence and makes different proteins, hence option A is correct.

A mutation is any kind of change that leads to the creation of an abnormal protein, DNA has genetic information to synthesize any kind of protein.

The process of transcription by which genetic information stored in the DNA is passed to the RNA, which translate this information to make the protein.

Protein is the final output of the genetic information stored in the organism's cell, if any change in the DNA sequence it affects the final functional structure of the protien.

Therefore, different protein is the result of the base pairs on this strand of DNA being switched.

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Answer:

Yes

Explanation:

Yes we would because the moon is spinning just as fast as earth, so we would see the same side.

Answer:

A

Explanation:

Cyclin

Answer:

Mid-Atlantic Ridge

Explanation:

This is because they are deep down, near the earth's crust .

The possible blood type of offspring, when a woman with type O and a man who is type AB are expecting a child are A and B.

There are four kinds of blood groups which are A, B, AB, and O, based on the presence of antigens in RBC. Blood groups A and B show co-dominance, while O is recessive.

When a woman with type O blood and a man who is Type AB are expecting a child, the possible blood types are A and B. 50% of the children would have A blood type, and 50% of children would have blood type B, which are heterozygous.

When Parents are both heterozygous for the B blood group, then the possible blood group of offspring would be 75% B blood type (25% are homozygous and 50% are heterozygous) and 25% O blood type.

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Answer:

el sapo

Explanation:el sapo

Answer:

A

Explanation:

because the crops will not grow with herbicide

Answer:

The answers are satellites, weather balloons, and automated weather stations

Answer:

Explanation:

Develop is some i think its false!

Answer:

False

Explanation:

I think it is the longest phrase in aquaculture. I hope this helps!

The term refers to the number of individuals in a population with a trait - frequency of the trait.

the total number of copies of that allele in the population divided by the total number of copies of all alleles of the gene. It represents the particular allele or trait in a population. the dominant phenotype equals the sum of the frequencies of AA and Aa,

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Answer:

The answer is Colorblindness

Answer:

a = 10 m/s²

F = 2000 N

m = 8.57 Kg

Explanation:

1) What is the acceleration of a 40 kg object pushed with a force of 400 N?

Acceleration of object = ?

Mass of object = 40 Kg

Force on object = 400 N

Solution:

Formula:

F = ma

by putting values,

400 N = 40 Kg × a

a = 400 N/ 40 Kg   ( N = Kg.m /s²)

a = 10 m/s²

2) What is the force on an 800 kg rock being thrown at 2.5 m/s2?

Acceleration of object = 2.5 m/s²

Mass of object = 800 Kg

Force on object = ?

Solution:

Formula:

F = ma

by putting values,

F = 800 Kg × 2.5 m/s²

F = 2000 Kg. m/s²  ( N = Kg.m /s²)

F = 2000 N

3) What is the mass of a ball being rolled at 3.5 m/s2 from a 30 N force?

Acceleration of object = 3.5 m/s²

Mass of object = ?

Force on object = 30 N

Solution:

Formula:

F = ma

by putting values,

30 N = m ×  3.5 m/s²

m = 30 N / 3.5 m/s²   ( N = Kg.m /s²)

m = 8.57 Kg

Answer:

I believe it’s 13.33 m

Explanation:

Because a = Fnet / m

So if you plug the numbers in it’s : 1.5 m/s = 20n / m

Then you’ll want to cross multiply which it’ll be : 20n = 1.5m

Then you want to get m alone so you’ll divide 1.5 to both sides and that’ll leave you to

13.33 = m

Answer:

D. A multipotent cell can become many different types of specialized cell within a tissue or organ, but it is more limited than a pluripotent cell.

Explanation:

Both pluripotent and multipotent cells are types of cells that can form multiple types of cells in the body. They are very similar, but there is one key difference. Multipotent cells are more limited than pluripotent cells. Pluripotent cells can form all cell types that make up the body. An example of pluripotent cells are embryotic cells. Multipotent cells are more limited, although they can develop into more than one cell type. Examples of types of cells that belong to this group are adult stem cells and cord blood stem cells.

Pluripotent and multipotent cells different such that multipotent cell can

become many different types of specialized cell within a tissue or organ, but

it is more limited than a pluripotent cell.

Multipotent cells are cells which develops into cells of the same lineage

which makes them very limited a common example is blood cells which forms

Pluripotent cells on the other hand are able to get developed into cells of

the body except those who are extra-embryonic tissues.

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Answer:

false i think

Explanation:

Answer: True

Explanation:

The correct answer for this question is letter C

Answer:

two

Explanation:

The endocrine and central nervous systems are the major control systems for regulating homeostasis