Sunlight, water, minerals, air, and space are all of plants. a. predators b. competing factors c. basic needs d. parasites

Aplant has an egg with 34 chromosomes how many chromosomes does a leaf cell of that plant have

Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass

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