Chapter 19 Review - Evolution

What percent of all species that have lived are now extinct?

• 10%

• 99%

The fossil records show?

• Life on earth is the same today as it was millions of years ago

• Life on earth has changed over millions of years

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-1

NGSS.HS-LS4-5

Fossils that are widespread and occur in certain layers, used to help age fossils.

• Radioactive fossils

• Index fossils

Uses the position in the layers of rock to determine age.

• Relative Dating

• Radioactive Dating

Tags

NGSS.MS-ESS1-4

Can be used to determine the of organic compounds less than 60,000 years old.

• Uranium 238

• Carbon 14

The period of time it takes for one-half of a radioactive isotope to decay.

• Half Life

• Radioactive Life

Tags

NGSS.HS-PS1-8

Protects organisms on earth from ultraviolet radiation.

• Oxygen

• Ozone

The cells thought to be on earth first.

• Prokaryotic

• Eukaryotic

The first cells on earth were probably? Choose all 3 that apply.

• Heterotrophs

• Autotrophs

• Prokaryotic

• Aerobic

• Anaerobic

Tags

NGSS.HS-LS4-2

What eukaryotic organelle is thought to have evolved from photosynthetic prokaryotes?

• Mitochondria

• Chloroplast