Answer:
Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.
Answer:
a.) freshwater plants may be rooted here--- Shore
b.) littoral zone--- it is the region of a lake or pond that is nearest to the shore
c.) limnetic zone--- A region of open water in lakes and ponds.
d.) alternately dry and submerged--- Intertidal Zone
e.) extends to edge of the continental shelf--- Neretic Zone
f.) generally low nutrient levels
g.) light penetrates here--- Photic Zone
h.) no photosynthesis occurs here--- Aphotic Zone
i.) benthic zone--- this is purely known as the bottom of the lakes or oceans
The nitrogen cycle could no exist without bactria. bacteria that lived inside the ground, catch the nitrogen that has been fixed and covert it into nitrate.
Once an egg is fertilized by a sperm, a zygote is formed. The zygote divides into multiple cells in a process known as cleavage, triggering the beginning of embryonic differentiation. ... Cells in these three layers will give rise to different parts of the organism. The endoderm eventually becomes the gut.Mar 3, 2011