Two key characteristics of a good scientific investigation are hypothesis and observation of whatever organism your studying.
Spread of disease is density dependent because it is more severe the greater the population density as the disease would spread more easily. If there is low population density it would spread slower.
The answer is D. Just think how hard it would be to see a moth of that colour when just about everything during that time period is grey.
Green plants are autotrophic and synthesize or make their own food by the process of photosynthesis. They do this with the help of carbon dioxide and water in the presence of sunlight. ... Their corresponding modes of nutrition are known as the autotrophic and heterotrophic mode of nutrition.
Answer:
They may change due to environmental changes. for example, if a cactus suddenly experiences a drought, it may change to become better at holding water than before. if it suddenly experiences large amounts of rainfall, it may change to release more water, etc.
