Answer:
<em>Measure the number of tumors formed on plants, which are exposed to Agrobacterium for different lengths of time.</em>
Explanation:
A scientific experiment comprises of an independent variable and a dependent variable. In the following example, the no.of tumours will be the dependent variable and the different lengths of time for which the plant will be exposed to the agrobacterium will be the independent variable.
The independent variable is the one which is changed so that its effect on the dependent variable can be studied.
Answer:
Each organism plays a particular role in its ecosystem. A niche is the role a species plays in the ecosystem. In other words, a niche is how an organism “makes a living.” A niche will include the organism's role in the flow of energy through the ecosystem.
Explanation:
Answer:
Competition is an interaction between organisms or species in which both the organisms or ... According to evolutionary theory, this competition within and between species for resources is important in natural selection. However, competition may ... Competition can cause species to evolve differences in traits.
