Energy transfer efficiencies between trophic levels can vary greatly, but generally average around transference.
a. 0.1%
b. 1%
c. 10%
d. 25%
e. 99%

Paint and solvents pose no potential hazard to human health. select the best answer from the choices provided t f

When an object is moving away from you while still making a sound, the pitch of the sound is perceived to a. lower b. unchanged c. fluctuating d. higher

What is one affect on the australian environment due to the introduction of non-native european rabbits? (a) more grass grew in response to the need of the growing population of rabbits. (b) the rabbits balance out the food chain as they became a natural prey to many predators. (c) the rabbits the land by digging, which caused the soil to spread much needed nutrients. (d) the rabbits out-competed other small animals species and caused them to go extinct.