Palentology

Question 0

When did life first emerge?

Answer 0

3.8 billion years

Question 1

When did the “earth” form and how?

Answer 1

4.5 billion years old

Gas & dust in the

solar nebulae - gas & dust swirling around
* formed planets and sun (star)

Question 2

What is paleontology?

Answer 2

Study of prehistoric life, including how organisms evolved & how they interacted with their environment

Question 3

What are fossils?

Answer 3

The principal type of evidence about prehistoric life

Sap, tar, & rock impress an organism & give skeletal structure of that animal

Question 4

Were dinosaurs (crustaceous period) one of the first organisms on the earth? Did they live with people?

Answer 4

No not one of the first

No did not live with people & dinosaurs

Question 5

How did life begin on earth?

Answer 5

Simple, single-cellular organisms
Prokaryotic - no nucleus
&
Remained for about half of life’s history

Question 6

When did the first multi-cellular plants & fungi emerge?

Answer 6

1.2 - 1.7 billion years ago

Ex. Algae & Bacteria

Algae was first photosynthetic organism

Question 7

When did the first multicellular animals emerge?

Answer 7

580 million years ago

Question 8

When did anatomically modern humans (homosapian-sapian) emerge?

Answer 8

200,000 years ago

Question 9

What is a eukaryote and how did it emerge?

Answer 9

Eukaryote - cell with a nucleus

Prevailing theory is that

1. a larger prokaryote engulfed a smaller prokaryote
2. and the smaller prokaryote became the nucleus

Question 10

With photosynthetic plants & algae emerging, what began to happen?

Answer 10

1. Oxygen was released into the atmosphere
2. Causing more animals to emerge
3. Water animals came onto the land

Question 11

Nebulae & gas can form?

Answer 11

Protostars - “before-they-are-stars”