Question

Ken enjoys bird watching. Every summer, he sees many ruby-throated hummingbirds in his garden. However, during the winter, he never sees any ruby-throated hummingbirds. Which of the following is a testable hypothesis that Ken could make to explain the winter absence of the hummingbirds?

Answer 1

Answer:

migration

Explanation:

birds migrate according to seasonal changes since they are cold blooded animals.They have to protect themselves from the winters as the winter temperature shall not suit their body and hence they migrate.