A theory is an explanation of observable facts and phenomena.

2 answers:

6 0

A scientific theory is meant to explain the current facts and make falsifiable predictions about patterns of facts emerging in the future.
a tested yet disputed hypothesis.

garri49 [273]3 years ago

4 0

This is true a theory is an explanation of observable facts and phenomena.

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Air at the equator is warm and has a ______density, which creates ________ in comparison to the air at the poles.

almond37 [142]

Answer:

Lower, low pressure

Explanation:

The temperature at equator are mostly higher than at the poles almost all times of year. This high temperature causes air at the equator to warm up quickly and thus, the air density reduces and it becomes lighter. Now, light air rises upwards. Thus, creating a low pressure region at equators. This low pressure causes the air near the poles gush towards the equator.

Hence, the blanks will be filled with the words

Lower, low pressure.

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3 years ago

The mechanical stress applied to bones during moderate physical exercise leads to

Vadim26 [7]

Answer;

-Bone tissue becoming stronger.

The mechanical stress applied to bones during moderate physical exercise leads to bone tissue becoming stronger.

Explanation;

-Bones and muscles both become stronger when muscles push and tug against bones during physical activity.Swimming and bicycling are not weight-bearing activities, so they do not directly help build bones. But swimming and bicycling do help build strong muscles, and having strong muscles helps build strong bones.

-Weight-bearing physical activity causes new bone tissue to form, and this makes bones stronger. This kind of physical activity also makes muscles stronger. Bones and muscles both become stronger when muscles push and tug against bones during physical activity.

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3 years ago

On a transverse wave, the crest is

Scorpion4ik [409]

The highest point the medium rises to and a trough is the lowest point the medium sinks to.

5 0

3 years ago

Read 2 more answers

1What does the term "metabolism" mean? to maintain internal balance

deff fn [24]

Answer:

to maintain internal balance

Explanation:

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3 years ago

name the molecular bond present in carbohydrates that enables change in colour when using Benedict's reagent test

Helen [10]

Answer:

copper.

Explanation:

Benedict's solution is simple carbohydrates are heated, the solution changes to orange red/ brick red. this reaction is caused by the reducing property of simple carbohydrates. the copper (II) ions in the Benedict's solution are reduced to Copper (I) ions, which causes the color change.

8 0

3 years ago