What tool gives scientists the best data to study ice loss near the poles? (1 point) A. Argo floats
B. satellite measurements
C. air bubbles trapped in ice
D. ice core samples​

What materials must dams have to produce electricity, and what must occur?

The most effective way to provide children with safety messages is to

Where is having brightly colored feathers that attract mates most clearly an adaptation for a bird? a. a forest with dense vegetation b. a sandy beach beside an ocean c. a snowy tundra with little vegetation d. a swamp with many hawks that eat birds