Science Questions and Answers (Q&A)

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Dinosaurs died because asteroid crashed and the dinosaurs can't survive in the changed climate.

5 Answers

Astronomy involves the study of stars, sun, moon, comets, planets, gas, galaxies, gas, dust and other non- earthly bodies. Therefore, the study of stars is known as astronomy. Scientists that studies these non earthly bodies are called astronomers. These scientists are also respon...Read More

4 Answers

There are three correct answers to this question, as bicycles include three types of simple machines. The first is a lever, which consists of a beam that is pivoted at a fixed hinge. The pedals on bikes are levers. The second simple machine included in a motorcycle is a pulley, which supports...Read More

3 Answers

The correct answer is option 1.
The role of xylem in the transport system of plants is to carry water and dissolved minerals from the roots, up the stem and leaves. Xylem is one of the transport system of plants, the other being phloem. The role of phloem, the other transpor...
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3 Answers

A thermometer measures a person/s body temperature. This might be under the tongue or under the arm in the armpit/ Don't get thermometer mixed up with a tempometer. Best write it as tempo meter, two words, and in fact this is correct. A tempo meter checks the speed, or tempo, of a piece of...Read More

3 Answers

The external intercostal muscle constructThe rib cage move upwards and inwardsThe diapharm constructs and move downThe volime of thoracic cavity increasesAir pressure in the thoracic cavity decreasesAir pressure in the atmosphere increasesThe air breathe...Read More

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Haemoglobin. Haemoglobin is to carry the oxygen from the diffusion to all other parts of body

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The answer to this is B. The thermometer is mainly used in order to measure the temperature of different objects. People normally use the thermometer to check their current temperature. A temperature that is above 37 is considered to be abnormal. Slightly higher temperatures than 37 Degrees...Read More

3 Answers

A is the answer to this question. There are a lot of people who have heard about the halogen Fluorine but they do not know what this is. This element is known to be highly toxic. You will know what this is based on its appearance which is usually pale yellow. This is an electronegative element...Read More

3 Answers

The medical term dolent also means pain which means that A is the answer to this question. There are some people who are brought to the hospital because they are experiencing pain. There are also some who are already in the hospital and they are undergoing pain. Some have a high tolerance for...Read More

3 Answers

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