Which of the following cavities would a surgeon performing an operation on the intestines have to open?

a) abdominopelvic and abdominal

b) thoracic and abdominal

c) abdominopelvic and thoracic

d) thoracic and pericardial

Which organelles are involved in energy conversion

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation