Biology, 12.02.2021 22:10 xXCoryxKenshinXx
Study the timeline.
A timeline. 4.5 billion years ago, Earth is formed. 4.3 billion years ago, Earliest water. 4.1 billion years ago, Single celled life. 3.5 billion years ago, Earliest oxygen and photosynthesis. 2.5 billion years ago, Complex single celled life. 1.5 billion years ago, Multi cellular life. 500 million years ago, Land life. 300 million years ago, Dinosaurs. 200 million years ago, Mammals. 130 million years ago, Flowers. 5 million years ago, Humans.
Based on fossil evidence, about how long ago did the first single-celled life form appear on Earth?
130 million years ago
1.5 billion years ago
2.5 billion years ago
4.1 billion years ago
ITS 4.1 BILLION YEARS AGO!
Answers: 1
Biology, 22.06.2019 02:00
2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?
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Biology, 22.06.2019 06:20
Which box will not accelerate? 4 newtons 4 newtons 4 newtons 25 kg 4 newtons 15 newtons 10 kg 30 newtons 40 newtons 50 kg 30 newtons 30 newtons
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Biology, 22.06.2019 10:30
What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.
Answers: 1
Study the timeline.
A timeline. 4.5 billion years ago, Earth is formed. 4.3 billion years ago, Earl...
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