It is likely that earth could lose half of its species in the next years.
a. 50
b. 100
c. 500
d. 1000

The procces of farming organism from the sea is ?

The seed coat's most important function is to provide a) a nonstressful environment for the megasporangium. b) the means for dispersal. c) dormancy. d) a nutrient supply for the embryo. e) desiccation resistance.

What is the following best defines climate?