1. refers to the nonliving parts of an ecosystem. Biotic Abiotic 2. refers to the living parts of an ecosystem. Biotic Abiotic

3. Parasitic diseases and predator/prey relationships are all examples of factors in an ecosystem. biotic abiotic

Complete each row of the table below by filling in the missing prefix or missing exponent.

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse