The right answer is C.invention
Contact lenses are placed directly on the surface of the eye to correct your eyesight.
They can correct myopia and hyperopia. They can also correct age-related astigmatism and hyperopia (presbyopia).
Their principle is the same as for glasses: they bend the light and redirect it to your retina to improve your eyesight.
I would say, no it gets colder because you become exposed to space where heat isn’t trapped in
Since pressure is force per unit area, blood pressure could be thought as the force exerted by the blood to the surface area of your blood vessels. When your blood vessels dilate, it means that they expanded. The result would be faster flow of blood. When this happens, the force of the blood is not any more concentrated on your blood vessels because there is more room available.
Think of a faucet where tap water flows. When you stopper the faucet with your finger, you feel the force of the water. The pressure builds up as manifested by the sound your faucet makes. But when you release your finger, the water rushes through and flows faster. The pressure is released. Therefore, when your blood vessels are dilated, your blood pressure decreases.
<h3>Food chain</h3>
A food chain is a chain of different animal species that are dependent on the next as a source of food. If one source dies, then the chain starts to break.
<h3>Food webs</h3>
Food webs are a system off overlapping food chains. Basically meaning, many food chains combined together.
<h3>Pyramid Model</h3>
A pyramid model includes the following:
- Primary Producers
- Primary Consumers
- Secondary Consumers
- Tertiary Consumers
Hope this helps! :)
<h2>-CloutAnswers </h2>
