Answer:
well s birds get scared easily, so there is something that tells them to get out of there.
dose that answer your question?
Enzymes.
Enzymes are responsible to make reactions hard to take place, or even very unlikely to happen, to actually happen. They are proteins that have normally an active binding site where molecules may connect to and preform the reaction. The necessary energy to make a reaction occur is less when aided by enzymes and that's what makes of them catalysts so that reactions may occur even when in lower temperatures.
To determine what the base sequence for the complementary strand, would be simply remember the base pairing or nitrogenous base pairing rules, for which nitrogen containing base hydrogen bonds or complementary base pairs with another.
A = T
G = C
So the complementary strand would be :
GCATCC.
When trying to figure out the outcome of an experiment that you don't fully understand or can't find out what the result would be beforehand.