Answer:
The Iapetus Ocean began to open up
Explanation:
The correct answer is: 4) Standing defenses are always present; induced defenses develop in response to a threat
Induced defense is defense that can be changed or invoked when needed. Induced defenses are slow to happen. When invoked, induced defense requires energy but otherwise doesn’t.
Standing defense is always there. It is use, for example when predation is a constant threat.
D: fronds
hope this helps!
Monkeys and humans share a common ancestor. ... The tailbone became vestigial, and the tail disappeared because humans could balance on two legs. 3. Grabbing things with their tails became difficult for humans, so their tails disappeared.
hope dis helps ^-^
