Unlike individual elements, visible light creates what kind of spectrum?
question 10 options:
a)
continuous spectrum
b)
line spectrum
c)
alternating spectrum
d)
visible light does not emit a spectrum

Explain how scientists use geologic time to determine the age of landforms.

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird