Biotic factors can influence ecosystems, since they cause major changes in the environment by activities originated by living organisms. Deforestation, for example, reduces food and habitat for all organisms that make up an ecosystem, being a biotic factor with a high impact on ecological balance. In the same way, the outbreak of some disease that affects an entire population can unbalance the trophic relations, causing a collapse in the ecosystem.
The intra and interspecific relationships are also considered biotic factors that act in the functioning of an ecosystem, since it is through these relationships that the ecological balance is maintained. Predation, for example, keeps the population of primary consumers stable, preventing overexploitation of resources. Other relations commonly established between organisms are mutualism (mandatory association for the life of both species), competition (which may be for food resources, sexual partners or territory) and parasitism (a parasite survives by consuming its host, and may even kill him).
Answer: OBSERVATIONAL STUDY
Explanation: Observational study as used in social sciences, psychology and statistics can be defined as a research in which the variable that is changed or manipulated in an experiment, is not under INFLUENCE/CONTROL of the researcher.
This is usually done due to logistical restrictions and or due to ethical reasons.
Some types of Observational study are;
Case Control study
Cross sectional study
Longitudinal study.
An example of Observational study will be observers stationed at a supermarket to see how much processed food versus fresh food was purchased.
Answer:
a process that creates growth, or progress.
True. The cognitive approach focuses on the subject and the
teaching style of the instructor. The cognitive approach emphasizes on the
understanding of the concepts of the subject of study. The behaviorist approach
on the other hand focuses on the behaviors that are observed.
<span>They wanted to be treated equally.</span>
