Which of the following was not a challenge for survival of the first land plants?
a. sources of water
b. sperm transfer
c. desiccation
d. animal predation
e. absorbing enough light

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.

japan is the correct anwser because i already took the test and i passed it