How much heat is required to heat 500 grams of ice from -40°C to 0°C?

Is this a scientific model? use complete sentences to explain why or why not. a graphic organizer showing the water cycle

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

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