True or False: A solution of pH 2 is 100 times more acidic than a solution of pH 4.

A secondary consumer (carnivore) gets roughly what percentage of the energy available to the primary consumer (herbivore) it eats?

Which of the following statements about ecological studies is true?

According to Millennium Ecosystem Assessment (MEA) report all of the following have taken place in earth in the past 50 years EXCEPT

Humans’ main impact(s) on the environment can be broadly described as:

An owl and a hawk both eat mice. Which of these terms describes the relationship between a hawk and an owl?

Density dependent factors include all of the following except:

The current human population in the world is about:

Largemouth bass and rainbow trout are stocked in a small, deep 10-acre pond. The bass are most active in 20-30 °C water, and the rainbow trout prefer water at about 6-22 °C. We expect to find few places in this pond where the two species interact because they have different _____.

All of these factors drive children’s growing interest in moral issues EXCEPT: