Which two reasons do marine animals make sounds underwater?
a. to seek out mates b to imitate humans
c. to ward off predators
d. to create music
e. to attract prey

Always use significant figure rules. remember that these rules apply to all numbers that are measurements. if a vector that is 3 cm long represents 30 km/h, what velocity does a 5 cm long vector which is drawn using the same scale represent? a.100 km/h b.60km/h c.50km/h

In a cladogram' when does a group of organisms branch off

This is the interaction of two organisms where one is and the other is neither nor harmed.