subject
Chemistry, 17.10.2019 00:30 rayne40

1. black earth is based upon the meteorites that coalesced to form the early earth a. true b. false 2. grey earth describes the formation of earth's granite continents a. true b. false 3. the first rock to form on earth was granite a. true fals red earth is named for the banded-iron deposits resulting from the introduction of oxygen into the earth's atmosphere 4. a. true b. false 5. white earth a time when earth was frozen from pole to pole a. true b. false 6. the oldest obiects in the solar system are meteorites a. true b. false 7. photosynthesis led to the rise of the levels of nitrogen gas a. true b. false 8. strombolites are found as fossils because of their mineral shells a. true b. false 9. the foundation rock of continents is basalt. a. true b. false 10.the first fossilized remnants of life found in the ancient rocks of australia are called trilobites a. true b. false 11. the longest lasting gemstone is zircon a. true b. false 12. the building blocks of life are amino acids a. true b. false

ansver
Answers: 3

Another question on Chemistry

question
Chemistry, 21.06.2019 16:00
Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.
Answers: 1
question
Chemistry, 22.06.2019 00:40
1) in saturated limewater, [h+ ]=3.98x10-13 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 2) in butter, [h+ ]=6.0x10-7 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 3) in peaches, [oh]=3.16x10-11 m a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 4) during the course of the day, human saliva varies between being acidic and basic. if [oh]=3.16x10-8 m, a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? /
Answers: 3
question
Chemistry, 22.06.2019 06:00
According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead
Answers: 2
question
Chemistry, 22.06.2019 14:00
List the path of the respiratory system
Answers: 1
You know the right answer?
1. black earth is based upon the meteorites that coalesced to form the early earth a. true b. false...
Questions
Questions on the website: 13722363