Which of the following events adds greenhouse gases to the atmosphere?
A. Factory and Power-plant emissions
B. Photosynthesis
C. Rising sea levels
D. Nuclear Radiation

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous

Each nephron is made up of capillaries that form the __ sweat glands bladder glomerulus ureter