What might happen if bt corn affects non-target organisms such as beneficial insects or harmless insects?

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Which event would lead to primary succession of a forest?

What kinds of molecules can pass through the cell membrane without any problem?