If a disease caused the death of 50 percent of the individuals in the 25-40 year old age range, this would have minimal effect on the individuals in younger and older age ranges.
a. true
b. false

Animals such as pronghorn antelope, bison ans badgers dot to the landscape. where are these animals located?

Name the organs of humanelemintary canal.

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels