What may happen to an ecosystem of all primary consumers were removed

Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry

Which is an example of a decomposer? a. bear b. algae c. grass d. bacteria d bacteria

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different