A scientist studies how sunlight affects a person's skin. Which of the following is a testable question about this topic?A, Does being in the sun make your skin dry?
B. Do people look better when they have a suntan?
C. What is the most enjoyable time to be in the sun?
D. Should children be allowed to lie in the sun?

Answers

Answer 1

Answer:

Out of the options the one that can be tested is: A) Does being in the sun make your skin dry?

As it can be seen that the results of the other options in the question can vary from person to person. As some might find suntan attractive and some might not. Similarly, some might enjoy the morning time sun whereas some might enjoy the sun in the evening. And in the last option, it is hard to conclude whether children might lie in the sun or not as it merely depends on the individual's resistance power to the sunlight.

Therefore, the correct option is(A).

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Answer 2

Answer:

A. Does being in the sun make your skin dry?

You can test this by putting people in the Sun and seeing hop much dryer their skin is than when they're not in the Sun.

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Which substance is uniquely a product of incomplete combustion of a fossil fuel?

Answers

I can think of two of them:

-- carbon monoxide

-- black soot

which substance is uniquely a product of incomplete combustion of a fossil fuel?

carbon monoxide

It takes 56.5 kilojoules of energy to raise the temperature of 150 milliliters of water from 5°C to 95°C. If youuse an electric water heater that is 60% efficient, how many kilojoules of electrical energy will the heater
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Answers

You'd get an extra 40/60 of the energy, or 2/3. Multiply 5/3 by the required energy to get the actual consumption.

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Answers

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A deficiency in zinc might result in stunted growth. Please select the best answer from the choices provided. T F

Answers

This is a true statement.It is said to be 'vital' to the growth of humans in an experiment and said to lead dwarfism if you do not get the amount you need.

A deficiency in zinc might result in stunted growth and the best answer to the question is TRUE.

What is deficiency of zinc ?

The deficiency of zinc is the lack of zinc minerals in diet or human system.

Zinc deficiency is characterized by the following;

Stunted growth,
Loss of appetite, and
Impaired immune function

Thus, a deficiency in zinc might result in stunted growth and the best answer is TRUE.

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All contraceptives prevent STIs true or false

Answers

False. Not all contraceptives prevent STIs.

Contraceptives are items used or taken to prevent conception. These are birth control pill, patch, ring, IUD, birth control shots, and condoms. Among these contraceptives, condoms are the only type of birth control that prevents STIs or Sexually Transmitted Infections.

All contraceptives prevent STIs is False because not all them are used in STI prevention.

What is contraceptives about?

Not all contraceptives prevent sexually transmitted infections (STIs). Only condoms, dental dams, and some internal condoms, such as the female condom, can help prevent the transmission of STIs.

Other forms of contraception, such as birth control pills, the patch, the ring, and the shot, do not protect against STIs. This is because they work by preventing ovulation or by thickening the cervical mucus, which makes it more difficult for spermto reach the egg. They do not prevent the transmission of STIs because they do not block the exchange of bodily fluids, which is how STIs are spread.

So, the answer is false.

Find out more on contraceptives here: brainly.com/question/2296833

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Like chargers _________ and opposite chargers _______

Answers

Like charges repel, while opposite charges attract.

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