Answer:
<em>The correct option is D) studying how the mayfly population affects the number of trout in a stream
.</em>
Explanation:
In general, ecology can be described as the study of the interaction of organisms with the biotic and abiotic components of an ecosystem. It is the study of the interaction of organisms with one another and with their biophysical environment. The statement mentioned in option D shows the interaction between the mayfly population and the trout population. Hence, it is the option which would directly be related to the science of ecology.
Answer:
They started to help prevent malaria, as well as typhus and other infectious diseases, from spreading across the U.S
Explanation:
I believe the answer is: double blind procedures
double blind procedures refers to a form of study in which both participants and the researchers do not know which subjects are receiving the treatment. The purpose of double blind procedures is to prevent the bias held by the experimenters along with placebo effects.
Answer:
Biomagnification is the collection or accumulation of a toxic or non-toxic substance or chemical by an organism from exposure to water and food that leads to a concentration that is far more than the expected condition of exposure from equilibrium. It leads to harmful effects on the health and physiology of individual organisms.
Consuming a huge number of marine animals or fish could cause the biomagnification of harmful substances if accumulated such as mercury as it is the most significant source of ingestion-related mercury exposure in humans.
Many manufacturing units were relocated to the urban areas due to the introduction and usage if steam power.
Explanation:
Second half of the nineteenth century is known for the factories that used steam power in the urban areas. Separate buildings housed the steam engine, and it inspired the development of factory model. Advance in iron and steel industry and rail road construction companies urged the factorial set up in cities rather than the towns.
In the countryside, many factories were set up near the rivers so that the finished products were easily transported to different places. Due to the invention of the steam engines, the transportation of finished goods was easy and feasible.
