Biodiversity is a. difference in variety and abundance of species from place to place b. the three dimensional distribution of species and biological features c. the variety of life in all its forms and combinations and at all levels of organization d. the relative abundance of the different species in a community e. the total number of species in a location

Identify the type of energy used in each action. the flexing of an arm muscle: a signal transduction process by a neuron: a ball at the top of a hill: 1. electrical energy 2. mechanical energy 3. gravitational potential energy

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.