When scientists are testing ideas to determine facts, they
a. follow a specific set of logical steps
b. report observations to the scientific community without data collection
c. use different steps that are unique to each scientist
d. use only mathematical modeling
e. first ask fellow scientists at annual meetings what steps to take
A
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Why is it difficult to estimate chemical toxicity in real life using laboratory experiments?
What will be an ideal response?
A dry climate might impact how people live by increasing
A. the likelihood of earthquakes. B. both the risk of drought and other water shortages and irrigation needs. C. irrigation needs. D. the risk of drought and other water shortages. E. the likelihood of volcanic activity.
Soil separates refers to
A) differing soil colors in a pedon. B) individual mineral particles, such as sand, silt, and clay. C) the different soil horizons. D) pebbles, gravel, cobble, and other materials greater than 2 mm in diameter found in soils.
How certain are scientists that humans are causing global climate change? Describe the language used by scientists and some of the particular climate trends they have identified. Why is there still debate about global climate change?
What will be an ideal response?