is the chemical secreted into the gap between neurons at a synapse

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.