Checking 3 of my answers....PLEASE help :)?

Question

1.) How have humans managed to increase the carrying capacity of the environment?
a.) through development of vaccinations*
b.) through adaptability due to high-level brain functioning
c.) through industrialization
d.) through the development of agricultural practices

2.) Which of the following is an example of resourse partitioning?
a.) Two species of birds that eat fruit from the same tree
b.) Two species of mice-one eats seeds; the other eats insects
c.) Two species of squirrels-one eats acorns from the branches; one eats acorns that have fallen*
d.) A species of butterfly and a species of bee that pollinate the same flower

3.) Regarding hot spots, which statement is true?
a.) they're found in all biomes
b.) they're ess vulnerable to species loss
c.) There's too little rainfall to irrigate crops
d.) they're too rich in biodiversity*

Answer 1

1D Increasing the amount of food produced raises the carrying capacity.

2C The resource is the acorn crop. Partitioning the resource means dividing up the resource to minimize competition.

3A Hot spots are areas that face extreme threats and are losing habitat at an alarming rate.