All aerobic organisms have mechanisms to take in oxygen and remove carbon dioxide. An organism's need for energy-intensive respiratory and circulatory systems depends on which two factors?

This is the main structural axis of the plant that supports leaves, flowers and fruits; transports fluids; stores nutrients and produces new tissue.

Match the following terms and definitions. 1. species that are adapted to live in equilibrium at carrying capacity population density 2. population growth that reaches equilibrium and carrying capacity population 3. death rate mortality 4. birth rate k-selected 5. a group of interacting individuals of the same species within the same geographic area natality 6. the number of organisms living in a particular area logistic growth

Use the distance formula to determine weather each pair of segments have the same length