The number of new cases of a particular disease contracted within a defined population in a specified period is referred to as the incidence of the disease.
Population is defined as a group of similar type of organisms. This group of organisms live in the same area, they require same resources, have similar types of habits. The most essential criteria is that they can breed and reproduce among themselves.
Incidence of a disease is the data that provides information about the number of people affected by a disease at a given period of time. The likelihood of a person getting affected by the disease can be estimated using incidence.
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Plant cell growth, an irreversible increase in cell volume, can occur by expansion (increase in cell size in two or three dimensions) or by elongation (expansion constrained to one dimension). Variety in cell shape may result if either of these two processes occur only at specific regions of the cell surface.
Answer:
2. Van Leeuwenhoek
Explanation:
Hooke did discover it but the cells were dead!
The sporophyte is much larger than the gametophyte in vascular plants.
Behavior means the way in one person acts and conducts them self, toward others.