28)
a scientific theory is an explanation based on observations and experiments.
t...
28)
a scientific theory is an explanation based on observations and experiments.
true
false
29) what is a scientific law?
30)
experiments provide data which become a major part of the foundation for scientific disciplines.
true
false
31) imagine you are about to purchase a new refrigerator. there are two models that you are considering. each refrigerator is required to have an energy efficiency sticker on the door so that the buyer can be aware of the cost of running the refrigerator. refrigerator (a) costs $10.00 a month to operate and $700.00 to buy. refrigerator (b) costs $15.00 a month to run and $600.00 to buy. decide which refrigerator you would purchase, (a or b) and indicate in the answer box why it would be better for the environment.
32)
patterns of stars in the sky are
a.) observations
b.) constellations
33) ancient greeks and romans believed that patterns of stars in the sky and
a.) unfamiliar objects and clouds
b.) faces and rock shapes
c.) mythological characters and animals
the sun in our solar system is a
a.) cloud
b.) star
c.) constellation
the considered to be the closest star.
a.) neptune
b.) sun
c.) moon
36)
how long does it take for light from the sun to travel to the earth?
a.) eight minutes
b.) five minutes
c.) four years
Answers: 1
Biology, 21.06.2019 20:20
2. what process do mrna and trna work together to complete? (3 points)
Answers: 3
Biology, 22.06.2019 00:40
Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation
Answers: 1
Biology, 22.06.2019 08:20
Which is not a characteristic of bacteria? a. they are unicellular. b. they are prokaryotic. c. they are the smallest form of life on earth. d. they are multicellular.
Answers: 2
Biology, 22.06.2019 12:40
In a cladogram, what occurs at a node? a derived trait appears. evolution is stopped. an ancestor dies. the cladogram ends. aa as s as ss what are the chances that their offspring will have sickle cell anemia? 0% 25% 50% 100%
Answers: 3
Mathematics, 07.04.2020 18:23
Mathematics, 07.04.2020 18:23
Mathematics, 07.04.2020 18:23
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Mathematics, 07.04.2020 18:24