Which is a characteristic of chordates? All chordates breathe air
all chordates live on land
all chordates have a notochord
all chordates have a backbone

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve

What organ systems are working to you cool down after a workout?

Which box will not accelerate? 4 newtons 4 newtons 4 newtons 25 kg 4 newtons 15 newtons 10 kg 30 newtons 40 newtons 50 kg 30 newtons 30 newtons