Please help would mean a lot tried looking up the answer but I have to pay to get answers.

Answer:

B

Explanation:

Answer:

B

Explanation:

Answer:

1. Circulatory system is made up of your heart, arteries, veins and capillaries.

2. There isn't a photo attached. But Specialized cells perform specialized functions in multicellular organisms. Groups of specialized cells cooperate to form a tissue, such as a muscle. Different tissues are in turn grouped together to form larger functional units, called organs.

Explanation:

Answer:

yes HIV can  be  transmitted  through  sex or already chewed food like your mom did for you when you were a baby it can also your mothers breast so i hope u drank out of a bottle

Explanation:

Answer:

B

Explanation:

death of a cell which occurs as a normal and controlled part of an organisms growth

Answer: b. the output of a system keeps conditions within the body absolutely constant only in a negative feedback loop.

Explanation:

In the negative feedback loop, the feedback reduces the excessive response of the stimulus for example regulation of body temperature, and control of blood glucose level. In the positive feedback loop, the response of a stimulus is intensified. Example, positive feedback is the childbirth and blood clotting. According to the negative feedback loop the output of the system keeps the internal body environment constant with respect to the changes in the external environment hence, maintains the homeostasis.

Answer:

b. the output of a system keeps conditions within the body absolutely constant only in a negative feedback loop.

Explanation:

Answer: A U G U G G A A C C G C U G C U G A

Explanation:

Answer:

AUGUGGAACCGCUGCUGA

Explanation:

Answer:

When the cloud of gas which formed the solar system fell inwards to form the solar system, it had net angular momentum. ... The cloud that formed the solar system had angular momentum which was deposited into the velocities of planets and other bodies in orbits around the Sun (as well as the Sun's rotation).

Answer:

Fastest- chicken

mouse

sheep

baboon

Slowest-human

Explanation:

Answer:

Fastest- chicken

mouse

sheep

baboon

Slowest-human

Explanation:

Answer:

the hard work he went through

Answer:

Why most foods needs to be digested? Give at least 3 reasons.

Explanation:

Foods must be digested cause of the following reasons:

1. To get energy the food must be digested.

2. To provide nourishing vitamins and minerals to our body.

3. You will be affected by some diseases if you didn't digest your food.

Answer:

Human blood is red because of the protein hemoglobin, which contains a red-colored compound called heme that's crucial for carrying oxygen through your bloodstream.

Blood gets its bright red color when hemoglobin picks up oxygen in the lungs

the oxygen essentally makes it red

Explanation:

Answer:

sample 1

Explanation:

has phosphorus, main chemical compund

Students are given data from an investigation that identified some of the chemical elements present in four different sample correct sample is sample 1.

Chemical element, also called Part, any substance that cannot be decay into simpler subsnces by normal chemical processes.

Thus, sample 1 is correct.

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Agriculture pollution

Explanation:

Agriculture is a main source of pollution in lake water. chemical and fertilzer

Answer:

Pesticides and fertilizers used on crops fed to animals are a major contributor to land pollution

Explanation:

hope this helps :)

The conclusion about DNA from the idea that it is a cell's "brain” is that it controls what cells do.

DNA:

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Answer:

Depends on the number of experiment variables.

Explanation:

You should only test one variable/factor

Answer:

A

Explanation:

1 half-life = .4 kg = 15 years

2 half-life = .2 kg = 30 years

3 half-life = .1 kg = 45 years

4 half-life = .05 kg = 60 years

Answer:

A

Explanation:

Initial mass is 8. The half-life is 15 years.

1st half life=.8/2=.4

2nd half life=.4/2=.2

3rd half life=.2/2=.1

4th half life=.1/2=.05

For each half life that it took it to go from .8 to 0.05, you add 15 years since that is the half life of the substance. 4*15=60.

So, the answer is A. The material decayed from 0.8 kilograms to 0.05 kilogram in 60 years.

Answer:

Lengthen his legs and straighten his teeth.

Explanation:

Vincent had done surgery to lengthen his legs and straighten his teeth in order to enhance his genetic  imperfections because he has short legs and improper teeth. He also had some other diseases such as heart disorder, neurological disorder, manic depressive and attention deficit disorder. These disorder can't be cure because it occur to him genetically.

Answer:

TRUE!!!

Explanation:

Artificial selection, often known as "selective breeding," is when people choose animals or agricultural products based on desirable features, hence it is a true statement.

Different phenotypes can be introduced into an organism via genetic changes that change gene activity or protein function.

Natural selection is the process of identifying advantageous traits in plants and animals and taking actions to improve and perpetuate those traits in subsequent generations.

If a trait is advantageous and aids an individual in surviving and reproducing, the genetic variation is more likely to be passed to the next generation.

Therefore as opposed to letting the species evolve naturally without human intervention, as in the natural selection, hence it is a true statement.

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#SPJ2

Answer:

Intrusive Igneous

Explanation:

It is commonly composed of about two-thirds plagioclase feldspar and one-third dark-coloured minerals.

Answer:

The correct option is D.

have no net movement, this is an isotonic solution compared to inside the tube.

Explanation:

It will have no net movement, this is an isotonic solution compared to inside the tube because isotonic solution is a solution that has the same osmolarity or solute concentration in both solution, which allow free water movement across the semi permeable memberane on both solution i.e the concentration of the two solution are mostly the same.

Answer:

As an organism develops, cells differentiate to form different types of cells. Most types of animal cell differentiate at an early stage. Many types of plant cells retain the ability to differentiate throughout life. In mature animals, cell division is mainly restricted to repair and replacement.

Explanation:

''.''

In mature animals cells differentiate during : Repair and replacement of  animal cells

Cells differentiate in organisms and plants to create more cell types, as the organism and plants continue to mature. While cell differentiation in animals occur mostly before maturity, plants cells continue to differentiate until they die.

While in mature animals, cells differentiates at maturity only when the cells of the mature animal needs repair or replacement due to damage caused to the a cell or tissue.

Hence we can conclude that in mature animals cells differentiate during repair and replacement of cells.

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durring puberty

Explanation:

Answer:

Oxygen

Explanation:

"Photosynthesis" is a process that is being used by plants in order to sustain their metabolic needs. In order to do this, it converts "light energy" into "chemical energy." There are mainly three things that are needed for the process: sunlight, water and carbon dioxide.

Sunlight (provides light energy) comes from the sun while water is drawn from the plant's roots. The light energy fuels the process. Carbon dioxide, on the other hand, is taken from the air by the plant's leaves. Once these three things are combined, they produce sugar ([tex]C_{6} H_{12} O_{6}[/tex]) and oxygen (6[tex]O_{2}[/tex]). So, the other molecule being asked above is "Oxygen."

Answer: At which point does warm air begin to rise before colliding with cold air. 3

Explanation: Hope this help

Answer:

Answer 3 where there is a red arrow swooping up

Explanation:

That is warm air entering from the right and moving upwards (rising) before it collides with the cold air.

Answer:

the trapping of the sun's warmth in a planet's lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.

Explanation:

I think it can be incorrect also so refer to Science teacher also. also.

Answer:

There will be few if any complications.

Explanation:

Just took the unit test review

Answer:

there will be few if any consequences

Explanation:

just finished unit test review, hope this helps <3

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