Ferns, whisk ferns, and lycopods are all considered to be
a. vascular seed forming plants
b. vascular spore forming plants
c. non-vascular seed forming plants
d. non-vascular spore forming plants

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

What is responsible for the uneven heating between the poles and the equator on any given day

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?