What is an investigation which all conditions are controlled

Answers

Answer 1
Answer: It is a controlled experiment

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Which elements are found in all living things? 30 POINTS!!carbon, oxygen, potassium, calcium, nitrogen, sulfur
hydrogen, phosphorus, oxygen, calcium, nitrogen, sulfur
carbon, hydrogen, phosphorus, oxygen, nitrogen, sulfur
hydrogen, oxygen, potassium, calcium, nitrogen, sodium

Answers

Answer:

The correct option is C

Oxygen

Carbon

Hydrogen

Nitrogen  

Sulfur

Phosphorus

Explanation:

Oxygen is considered to be the most abundant element to be found in the living cells. Usually, a living cell is made up of 65% oxygen.

Carbon is the element which forms the basis for life for all organisms which can be seen on the planet Earth.

Hydrogen combines with oxygen to form water which makes up 65 percent of the human body.

Nitrogen is an active constituent of molecules such as proteins which are of utter importance to an organism.

Phosphorus is present in the form of phospholipid layer which is an active constituent of the cell membranes.

Answer:

The correct option is C

Explanation:

How much more acidic is a solution with a PH of 5 than a solution with a PH of 8?

Answers

If The Number Is Greater Than 7 Then It's More Basic If It's Less Than 7 It's More Acidic. so 5

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True or False State the correct answer and provide your reasoning

6. Gravity is a force that can be changed. T/F

7. The bigger an object is, the smaller the force of gravity. T/F

8. As one object gets closer to another object, the force of gravity will increase. T/F

9. The Sun has a greater gravitational force than Jupiter. T/F

Answers

6. False, Gravity is a force that cannot be changed
7. False, an object with more mass has more/less gravitational force than an object with a smaller mass. Objects that are closer together have more/less of a gravitational force between them than objects that are further apart. The more separation two objects have, the more the force between them decreases.
8. True, objects that are closer together have more/less of a gravitational force between them than objects that are further apart. The more separation two objects have, the more the force between them decreases. When mass 1 increases the force between the objects increases.
9. False, Jupiter, the fifth planet from the Sun, has the strongest gravitational pull because it's the biggest and most massive.

I hope this helps!!
The answer is 6f 7t 8f 9f

Why does tying the arm above the elbow make veins in the forearm more visible?

Answers

The tying results in the more visible veins of upper arms due to blood flow restriction.

Veins are the part of circulatory system in the body, that functions to carry deoxygenated blood from different parts of the body to the heart.

The venipuncture has been the process of insertion of drugs or chemicals in a body through vein. The veins of the upper arm has been tied to make them more visible.

The upper arm veins are more visible as there has been blood flow restriction in the veins by tying that results in the bulging out of the vein.

For more information about veins, refer to the link:

brainly.com/question/9726668

Is the following sentence true or false. very few minerals are compound

Answers


false very few minerals are a compound

How does heavy water behave compared to normal water

Answers

You see, heavy water has much more mass. So it is heavier than the normal water
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Answer:

the phosphate head mixes with water ;the fatty acid tails do not

Explanation: