subject
Chemistry, 19.12.2020 03:40 Seaport

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 the timeline, about how many years ago could the oldest mammalian organism have lived?

5 million years
200 million years
1.5 billion years
4.5 billion years

ansver
Answers: 2

Other questions on the subject: Chemistry

image
Chemistry, 21.06.2019 14:10, carsonjohnsonn
Can smoke be transformed into liquid or used as energy or both?
Answers: 2
image
Chemistry, 22.06.2019 02:10, fvmousdiana
Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %
Answers: 2
image
Chemistry, 22.06.2019 10:00, alexabdercmur
Why is the structure of molecule important to its function?
Answers: 1
image
Chemistry, 22.06.2019 18:00, shawn423
How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate
Answers: 3
You know the right answer?
Study the timeline. A timeline. 4.5 billion years ago, Earth is formed. 4.3 billion years ago, Earl...

Questions in other subjects:

Konu
Mathematics, 11.05.2021 18:30