Answer:
18ft
Explanation:
because there are 18 blocks total 9 blocks at the bottom 6 in the middle and 3 at the top.
Answer:
B.
Explanation:
most valleys are weathered by running water. Glacier can also weather these. Because of running water it will carry the weathered pieces away.
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Explanation:
meiosis cell are parent cell
C X-inactivation "switches off" one of the X chromosomes.
Explanation:
Answer:
be heritable and be an advantage to offspring