how many red blood cells could you line up across the grain of sand? 4. How many red blood cells could you line up across the diameter of a penny (0.02 m)?

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

the maxium height is 34m/s

3. dark matter

empty space could also be a simple vacuum

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.