To be considered a source of water pollution, the source must include a chemical. true or false?

Two different liquids are poured together in an open container. Bubbles begin to form. After the bubbling stops, it is determined that the total weight of the two liquids is less than before they were poured together.

The name for continents in one landmass surrounded by gigantic ocean

Describe the observation that led to Wegener's hypothesis?

Why do scientists typically include as large a sample size as possible in their experiments?

Consumers are organisms that what?

Jan noticed that when she put a tomato in water, it sank. When she put an apple in water, it floated. Why did the tomato sink while the apple floated?

an ___organism has different types of cells that are specialized for various functions. (fill in the blank)

What process reshuffles allele combinations between homologous chromosomes? a. genetic recombination b. asexual reproduction c. independent assortment d. mitosis

If there was a fungicide that killed all fungi, make a prediction on how that would affect the ecosystem and eventually us humans

Why do you think a fracture involving the bones of the nasal cavity could affect the cranial cavity?