Answer:
Luminosity in relation to stars would be the amount of light emmited by a star in a unit of time.
Explanation:
That would be d) environment .
The term "cardiac" refers to the heart. Cardiac muscle is found in the heart and nowhere else in the body.
Answer:
The specific reaction of an enzyme depends on its active sites, which has shapes that closely matches the shape of its substrates. Upon substrate binding, the enzyme changes shape slightly in a way that allows the chemical reaction to happen more readily, thus reducing the activation energy of the reaction.
Explanation:
Lack of proper sanitation facilities and water drainage system can cause merging of fresh water with the sewage and allow bacteria, viruses and various other microbes to enter the water supply. This causes infectious diseases.
