Answer:
B. Human activities and natural events can damage the environment.,
Explanation:
Human activities are those activities carried out by a human being. The environment is being degraded daily as a result of the activities of man as well as natural occurrences e.g earthquake, tsunami, wild fire etc.
Human activities also called anthropogenic activities that damage the environment include sewage pollution, burning of fossil fuels, oil spillage etc. Hence, according to this question, human activities and natural events can damage the environment.
Meory T cells are defined as a subset of infection including cancer-fighting T cells
Well, the reson they do this is too look at the pupeles and if they dialate when the light hits there eye then they have not suffered trama to the brain but sence she did see trama then the eyes did not dialate which tells her there is trama in the brain, hope this helps!
C. Gravity causes stars to cluster
