Since the aphotic zone does not recieve sunlight it relys on the photic zone for the sunlight which in terms it does penetrate.
The stem of the plant should be cut at least three to four centimeters above the surface level.
The stem should be tightly fixed into the glass capillary.
All connection should be made air-tight by using paraffin.
Initial and final readings should be carefully noted.
Answer:
2
Explanation:
There are no zeros so the only numbers there are is 2 and 3. So two numbers equals two sig figs.
TRUE
These are commonly called as the joints in the body. They all have those features such;
articular capsule- a double layer of capsule that makes up the synovial joint,
joint cavity - this is a cavity that contains articular cartilage about 3 ml of synovial fluid.
synovial fluid= these acts as lubrincants and shock absorber
ligaments- reinforced the joints and it connects bone
