Answer: Leeuwenhoek biggest contribution is to the first tenet of the cell theory.
Explanation: the first tenet of cell theory states that every living being is made of cells and even an organism can be made of just one cell able to reproduce by itself.
Leeuwenhoek observations stablish the existence of microscopic structures alive some with movement. This helped other scientists to determinate this structures were cells that can make vital processes such as feeding, breathing or reproducing which are determinant in biological definition of life.
1. Camouflage
2. Competition
3. Competition
4. Symbiosis
<h3><u>Explanation</u>:</h3>
The camouflage is defined as the property of the living organisms that make them to prepare their body to perfectly match with their surroundings so that they cannot be recognised by their hunters. This makes them survive more in an environment with full of competition.
The competition is an interaction between the organisms where in a particular environment, different organisms compete for a particular prey for their living. Here the theory of the survival of the fittest work.
The symbiosis is an interaction between two or more species which leads to benifit of both the species in their living. Here one species help other in a form and other species do the same. There's benifit for both in the interaction.
Answer:
Following are the two advantages of endoplasmic reticulum.
1) Endoplasmic reticulum is an organelle of the cell which is responsible for the production of protein for the cell. This protein is sent to the Golgi apparatus where it is modified and used by the cell where it is needed.
2) Endoplasmic reticulum also helps in the removal of toxic substances from the cell. If these toxic substances are not removed, it causes damage to the cell.
Answer:
False. Closing mines has economic impact on communities.
Explanation:
- Economy is impacted by any hindrance in activities of production,distribution and consumption of any good or services.
- So, closing mines too has great impact in economic sector of that certain area.
- In many countries, mining has been the major source of economy and job opportunities for the community people.
- Closing these mines results in downfall of economy and increased unemployment in that particular community.
Sorry i needed the points... good luck tho
