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Effectus [21]
3 years ago
12

Earth’s first life forms were __________. aerobic cyanobacteria photosynthetic chemoautotrophs

Biology
2 answers:
SCORPION-xisa [38]3 years ago
4 0
Photosynthetic is the correct answer,
Delicious77 [7]3 years ago
3 0
The answer to your question would be Photosynthetic 
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Concerns over a global dependence on fossil fuels include environmental, economic, and social consequences.
Natasha2012 [34]

True

Explanation:

Concerns over a global dependence on fossil fuels include environmental, economic and social consequences. The effect of reliance on fossil fuels cuts across on almost all aspect of life.

  • Environmental concerns include pollution, acid rain, global warming e.t.c
  • Economic consequences involves monopoly of the energy market, scarcity, inflation, corruption e.t.c
  • Social consequences include reduced standard of living, poverty, e.t.c

Fossil fuel is a non-renewable source of energy.

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3 years ago
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2 years ago
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What is phylenogeny?
skad [1K]

Answer:

the branch of biology that deals with phylogenesis

Explanation:

another term for phylogenesis

3 0
3 years ago
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Which of the following are examples of nucleic acids?
DiKsa [7]

Answer:

C

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DNA and RNA are the only nucleic acids on this list

6 0
3 years ago
When crude oil is distilled, it is separated into categories. What are those categories characterized by?
goldfiish [28.3K]

Answer:

Differences in their boiling points

Explanation:

When crude oil is distilled and separated into categories, the categories are characterized by the differences in their boiling points.

At different boiling points, each of the fraction will separate out.

  • Crude oil is made up of different fractions of hydrocarbons.
  • As the chain length of the hydrocarbon increases, the volatility reduces and boiling point increases.
  • Components with short carbon lengths rises out from the column first and are cooled and extracted.
  • The categories are thereby, classified based on differences in their boiling points.
6 0
2 years ago
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