I believe for number 1 the answer is A 260
The way plates move, geologists identified three types of boundaries. • A. (dih-<span>VUR-juhnt) occurs ... at divergent bound- aries in the ocean and on </span>land<span>. .... Like the sea floor, </span>continents<span> also spread </span>apart at a divergent boundary<span>. The boundary ...</span>
Answer:
18. Which four body systems interact to allow a person to sneeze:
F. Muscular, immune, nervous, respiratory.
Don't really know the answer for the second one, sorry <33
Answer: B) are excited by light that falls in the center of their receptive field.
Explanation:
There are two types of bipolar cells present in the retina which are differentiated on the way the centres of their receptive fields respond to light. The names of bipolar cells are ON-centre and OFF-centre.
If a light fall at the centre of the receptive field of a bipolar cell, it will experience an exciting effect on that cell, resulting in it being depolarized, it is an ON-center cell.
Hence, the correct option is B.