Adisadvantage to the green revolution is that plant yields are generally similar to those with other methods of agriculture unless substantial amounts of commercial inorganic fertilizers are applied.
true
false
it is possible to use natural parasites to control pest species.
true
false
a k-selected species usually has a population size that is
a.
variable, with boom and bust cycles
b.
unpredictable at any particular time
c.
unaffected by changes in limiting factors
d.
very stable but very low
e.
close to its carrying capacity
ecological succession is generally a slow process.
true
false
what is the leading cause of death worldwide for people ages 15–49?
a.
influenza
b.
e. coli infection
c.
aids
d.
hepatitis
e.
malaria