Answer:
The vein
Explanation:
Veins have much thinner walls than do arteries, largely because the pressure in veins is so much lower.Veins can widen (dilate) as the amount of fluid in them increases.
The Cenozioc era is referred to as the age of mammals.
Answer: stored chemical energy :)
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Explanation:
Answer:
Half of the Moon's surface is always illuminated by direct sunlight, except during lunar eclipses when Earth casts its shadow on the Moon. Just how much of that light we can see from Earth varies every day, and we refer to this as a Moon phase.
Orbits: Earth
Explanation:
Answer:
The fossils found in deeper layers of rock are older.
Explanation:
This is because as the years go by more rock accumulates covering old fossils and creating space for new ones. The older fossils are then found in deeper layers of rock because of the newer layer that cover it.