Answer:
It is both a barrier keeping unwanted things out, and a gate for nutrients to be brought in.
Answer:
B. They sold 120 student and 30 adult tickets.
Explanation:
120 x 12 = 1,440
30 x 20 = 600
1,440 + 600 = 2,040.
A mother passes on her mt(DNA) or mitochondrial DNA which sometimes includes genetic material but a father only passes down a Y chromosome if he has a son. No genetic material.
The Grand Canyon is made of sedimentary rock that contains fossils up to 1 billion years old. and the several upper layers of rock contain terrestrial, or land-based, fossils, such as dragonfly wing impressions and the footprints of scorpions, centipedes, and reptiles
The answer will probably be b
