Biology, 14.12.2020 20:00 he0gaubong
Have a subject stand one foot away from a wall in a dark room. Have an assistant stand 10' back from the wall and shine the light at the friend's head. Observe the shadow's darkest (umbra) and lightest area around the edges of the shadow (penumbra). Measure the width of the penumbra. Measure the umbra. Record your data. Have the assistant with the light move 3 feet closer to the subject and shine the light on the subject's head. Measure the penumbra and umbra at this distance. Record your data. Have the assistant move another 3' closer. Repeat the measurements and record the data in a table like below.
Answers: 2
Biology, 21.06.2019 13:30
Many state and local authorities are making laws regarding recreation on lakes, rivers, and oceans to reduce water pollution. why would lawmakers need to consult with scientists before making these laws? a) to make scientists feel important b) so that the laws reduce pollution by a sufficient amount c) so that parks and lakefront facilities will still make large profits d) so that the public will believe that the laws are important to follow
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Biology, 22.06.2019 03:30
State officials are considering constructing a road through a forested wilderness area. this action will likely affect the forest ecosystem in various ways. part a: predict how the construction of a road could negatively affect plants and animals in that ecosystem. (3 points) part b: describe one way that the construction of a road could have a positive impact of the forest ecosystem. (1 point)
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Biology, 22.06.2019 04:30
Two critical interventions to turn around the opioid crises are:
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Have a subject stand one foot away from a wall in a dark room. Have an assistant stand 10' back from...
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