A scientific law is the description of an observed phenomenon
Answer:
photosynthesis
Explanation:
Sunlight is trapped from the sun and converted to chemical energy through a process called photosynthesis
Generating heat in order to start a reaction uses energy to begin with. Enzymes however reduce the activation energy and can only function (usually) within a narrow temperature range, using less energy. Enzymes are used because they are more efficient.
Answer: Water pollution also affects the ecosystem – it can cause a phenomenon called eutrophication. This can cause fish and other aquatic organisms to die. Toxic elements dissolved in water can make their way to humans through fish or other aquatic organisms.
https://byjus.com/biology/effects-of-water-pollution/
Explanation:
Because natural selection can only increase or decrease frequency of alleles that already exist in the population
