Why is competition for biotic resources a key factor in the success of an organisms or a population in an ecosystem

In general, how long does it take to accomplish a long-term goal? a.a few days to a weekb.a few weeks to a monthc.a few months to a yeard. more than a year

When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles which component of blood ensures that the muscles will receive it

Development has provided electrically for less money but what may be considered a cause of nuclear power