True or false about half the photosynthesis on earth is preformed by phytoplankton

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel

Which statement is true for bacteria a. bacteria have complex internal structures b. all bacteria are spiral in shape c. all bacteria cause disease in animals d. bacteria break down some foods

The polio virus can cause skeletal muscle paralysis by destroying neuron cell bodies. what area of the spinal cord is destroyed