Bibliography is essential in determining its content. I hope this helped
The answer is C. Pheromones are hormones (which are proteinous) produces by individuals of the same species and are a means to send communication signals for social interactions. They signal alarm, food and even sex. Sex pheromones are released by females beetles into the environment to signal their availability for mating. The pheromones are picked up by receptors on the male beetles and this is how they find the females.
I believe that the answer to your question would be A. Heart Begins.
Cations are positive so they have less electrons than protons, while anions are negative so they have more electrons.
Answer:
i think it is friction bcs gravity helps an abject move and friction causes it to slow down
Explanation:
