What are three methods that scientists use to gather data about historical temperatures?
What will be an ideal response?
Scientists have collected data by:1. analyzing radioisotopes in rocks and fossils2. examining fossils and isotopes from ocean sediments3. analyzing materials such as bubbles and soot trapped in ice cores4. analyzing pollen grains5. data collected from tree rings6. quantitative temperature measurements made since the 1860s
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Any animal that relies on only one or two sources of food is known as a(n) _______________
Fill in the blank(s) with correct word
Most minerals have a higher specific gravity than water
Indicate whether the statement is true or false
Neanderthals differ from humans in that ____
a. Neanderthals were not humans b. Neanderthals did not have sophisticated tools c. Neanderthals preferred a nomadic lifestyle d. Neanderthals had larger brains e. Neanderthals had smaller brains
The elevation of the water table will rise when
A) recharge equals discharge. B) recharge is less than discharge. C) recharge is greater than discharge.