Answer:
it is a cell membrane (d)
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Answer:
Villi are finger-like projections.They increase the surface area of inner walls and helps alot in absorption of digested food.
Explanation:
Answer:
b) The solar radiation can be absorbed by clouds and the atmosphere
Explanation:
The clouds consist of water vapour and the atmosphere consists of mixture of ai for example the carbon dioxide and methane. The water vapour and these two gases can all absorb sunlight. Reason for this is that the bonding pairs of electrons come from different atoms in the molecule and the bonds are distorted. Symmetrical molecules but with distorted bonds or bond electron pairs.
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Answer: It is not healthy.
Explanation:
Wearing a hat shields your eyes from the sun, which can cause your retinas to burn, this is why sunglasses are also recommended, it helps stop too much light from entering your eyes, as well as UV rays.
Wearing sunscreen can protect your skin from harmful sun rays. These harmful sun rays can cause skin cancer by putting a protective layer over the skin.
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The 3 types of muscle tissue are cardiac, smooth, and skeletal. Cardiac muscle cells are located in the walls of the heart, appear striated, and are under involuntary control.
