The ozone hole over the Antarctic has begun to heal, according to a new study, more than 30 years after its discovery. ... The stratospheric ozone layer protects Earth from the sun's harmful ultraviolet (UV-B) rays, which can cause skin cancer and cataracts in humans, and physiological damage in animals and plants.
Answer:
The surface area of a sphere = 48 ²
Explanation:
Given:
The radius of a sphere = 2 meters
Use π = 3 (Approx)
Find:
The surface area of a sphere.
Computation:
⇒ The surface area of a sphere = 4πr²
⇒ The surface area of a sphere = 4(3)(2)²
⇒ The surface area of a sphere = 4(3)(4)
⇒ The surface area of a sphere = 48 meter²
Hello!
So, day and night are caused because the earth makes a full rotation on its axis once every 24 hours.
That way, have of Earth is facing the sun (it is morning on that side) and the other half isn't (which is why it is nighttime over there).
For example, if it's nighttime in Canada and America, it's morning in Pakistan and India. This is because Pakistan and India are facing the sun whilst Canada and America are not.
A N S W E R:
The balls should be moved so that half the Earth is facing the sun and the other half is not. This would be 24 hours. As for the sun, it is a gas, not a solid, so it doesn't rotate like one. However, that does not mean that it is not rotating to some extent.
Answer:
Active transport
Explanation:
To transport the substrate across the membrane it will need energy in the process it's called active transport.