Dolphins use echolocation to help them navigate. They limit the sound that bounces of objects in the front of them. Dolphins are able to navigate their surroundings based on how long it takes the sound to return. What property of waves are dolphins using told them find their way around the environment

Which part of cellular respiration must occur before any of the other steps can occur

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird

Which contributions did galileo make to the model of the solar system? check all that apply. a mathematical model for the orbits of the planets scientifically accurate data on planetary orbits data that showed that planets reflected sunlight similar to earth's moon up the idea that stars are other suns that do not move u observations of the moons of jupiter rotating around the gas giant