A scientist is studying a single-celled organism found in a hot spring. The organism lacks a nucleus and has no peptidoglycan in its cell wall. The organism uses hydrogen sulfide as an energy source, and can survive even when oxygen is not available. The metabolism of this organism can be described as:.

The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

If animal agriculture was eliminated, how much grain would become available for human consumption?