Section Formative Assessment Reviewing Main Ideas
1. Describe three differences between developing
and developed nations using the examples
in Figure 24. Would you classily Mexico as a
developing nation? Explain your answer

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .

cells spend most of their time in interphase

sex cells are usually half's then they find another half and make a fertilize egg

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101