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What is a control in an experiment?

A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable. This increases the reliability of ...

Answered by Alessandra P. Biology tutor
13749 Views

What is meant by a reducing agent?

A reducing agent is oxidized. This means that it donates electrons to another substance, thus reducing it. Fe2+ to Fe3+ represents oxidation. Fe2+ could be a reducing agent.

Answered by Jools G. Chemistry tutor
2631 Views

Describe the changes in the lungs during inspiration

During inspiration, the intercostal muscles contract, moving the sternum up and out. This increases the thoracic volume, hence decreasing the pressure. The pressure gradient set up causes air inflow from ...

Answered by Dhaval N. Biology tutor
2434 Views

Outline and Explain the Logical and Evidential Problems of Evil for the Existence of God. (30)

The original Problem of Evil is often attributed to the ancient Greek philosopher EPICURUS (341-270BC).
If God can do nothing about the evils in the world, then He is not omnipotent.If He does not s...

Answered by Maya K. Philosophy and Ethics tutor
9482 Views

A student has loaded a spring beyond its limit of proportionality. What does this mean?

The limit of proportionality is the is the point beyond which Hooke's law is no longer true when stretching a material.

Answered by Alessandra P. Physics tutor
3700 Views

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