Which of the following is true about most predators? (Select all that apply.)
They have good hearing.
They have keen eyesight.
They are the biggest animals in the ecosystem.
They have special adaptations that help them to be successful hunters.

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils