Suppose 10, 000 units of energy are available at the level of the grasses. What is the total number of energy units available by the time energy reaches the owl?

answer: a) a compound microscope has a greater magnification ability than a simple microscope.

explanation:

b. the carbon cycle ensures living things have a source of hydrogen

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.