1. Which of the following is not an issue associated with genetic engineering? a. Development of the new allergies
b. Pests developing genetic resistance
c. Introduction of toxins into the human body
d. Increased exposure to vitamins and minerals​

Two grizzly bears are fighting over a fish to feed themselves. what kind of interaction is this scenario, which works as a limiting factor in the bears' survival? a. apparent competitionb. interference competitionc. exploitation competitiond. mutualism

There are 25 elements found in living things. how many of these elements are found in some organisms but not all? 1 , 6 , 19 , 25

Acase study allows a more detailed look at the life of a single subject than any other study