Answer:
1. ecology: e)the study of the relationship among organisms and the relationship between organisms and their environment.
2. Aristotle: g)an ecologist who developed classification system fro plants and animals.
3. environment: i) physical and biological surroundings of an organism.
4. cell: j) the basic unit of life.
5. Schleiden and Schwann: l) proved that cells are formed from the division of cells that already exist.
6.
7: ecosystem: i) physical and biological surrounding of an organism.
8: organism: k) any unicellular or multicellular organism.
9: biomes: c) land proportions of the ecosystem. e.g desert and tundra.
10: species: f) group or population of organisms that interbreed.
11: biosphere: h) the variety of species in different habitats on earth.
12: population: d) group of the same species living together in a certain location or region.
13: mutation:
14: Charles Darwin: b) proposed theory of natural selection.
15: species diversity: a) adaptability through random changes in the DNA.
Answer:
A vaccine works by training the immune system to recognize and combat pathogens, either viruses or bacteria. To do this, certain molecules from the pathogen must be introduced into the body to trigger an immune response.
Explanation:
Basically it trains the body by giving it a little expirementation withthe sickness. After that, the body will learn how to properly fight or keep the sickness at bay.
Hope it helped!;)
Proteins not expressed on normal cells but found on tumor cells are called tumor specific antigen.
<h3>What are cancer cells?</h3>
Cancer cells are cells whose cells cycles and growth has been altered as a result of mutation in their DNA resulting in abnormally high growth rates.
Cancer cells are also called tumor cells.
Proteins that are expressed in tumor cells but not on normal cells are called tumor specific antigen.
Learn more about tumors at: brainly.com/question/1681377
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