Which best explains a primary reason for the inability of life to exist in Earth's early atmosphere? There was insufficient energy from material collisions to change their density
O High temperatures during Precambrian time caused surface water evaporation.
Volcanic eruptions and comet collisions added different gases to the atmosphere
O Available oxygen was used to help create an ozone layer within Earth's atmosphere.

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

Witch type of microscope is used to view very small cell components like proteins and dna?

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.