B. Natural selection
Natural selection is the most important force of evolution. Other forces of evolution are mutation, gene flow and genetic drift.
Sand dunes are formed from wind movement. There needs to be a large amount of loose sand in an area with hardly any vegetation, enough wind to move grains of sand and some kind of obstacle to make the blowing sand lose its momentum and settle in a new place.
Answer:
Controls what goes into or out of the cell membrane
Explanation:
Detritivores are very important to energy transfer within an ecosystem because they are consumers that eat the trash and other wastes.
Answer:
Catalyst is a substance that influences the rate of reaction without being consumed in the reaction.
- They increase the rate of reaction by decreasing the activation energy of the reaction.
- As they are not used up in the reaction they are required in a small quantity.
- In biological system, enzymes are referred to as biological catalyst or biocatalyst. They are generally protein in nature and are very specific for their substrate. They also increases the rate of biological reaction by forming enzyme-substrate complex.
- Few examples of catalyst are: potassium permagnet, platinum, enzyme (like hexokinase, hydrolase etc) etc.