A mixture is made from two or more substances that are different and are not joined. A compound is a substance formed when two or more elements react with each other to form chemical bonds between their atoms
Answer:
ELISA is a technique of enzyme linked immunosorbent assay.
Explanation:
The full form of Elisa is enzyme linked immunosorbent assay. The ELISA technique is a boichemical technique that is used to measure the amount of protein or the antibody in a solution and is divided into three types :
- Competitive ELISA
- Direct ELISA or Sandwich ELISA
- Indirect ELISA
1. Indirect ELISA --- detects the presences and concentration of the antibody.
2. Sandwich Elisa or Direct ELISA --- detects the presences and concentration of the antigen/protein.
Barrier island refers to the off shore deposit of sands and sediments which runs parallel to the coast line. Off shore is the first line of defense against storm wind and waves, thus they must be protected.
Communities that are far from the barrier island will be committed to preserving it if the following information are given to them: barrier islands have very high beneficial impacts on distant communities, this is because wet land will not exist without the contribution of barrier island which keep the coast away.
The first law. Planets orbit is an ellipse with the Sun at one focus.
Answer:
D)clues about the past climate of Earth
Explanation:
The fossil record certainly has gaps, mostly because the conditions required to create fossils have been rare ever since life began on Earth. A very small percentage of animals that have lived and died ever became fossils. Thus, many pieces of the puzzle are missing; some will never be found.
