This event decreased the population, what mechanism of evolution is being observed?

• Mutation

• gene flow

• genetic drift

• random mating

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-5

How does this image support the theory of evolution?

• shows how a landmass separates after species evolve

• biogeography, possible explanation of how organisms evolved separately

• Original species are the most suited for their environment

• species evolve because of genetic drift

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

Fish lay thousands of eggs every season. Which condition of natural selection does this represent?

• nonrandom mating

• struggle to survive

• overproduction of offspring

• inherited variations

Tags

NGSS.HS-LS4-2

what was the significance of the miller-urey experiment in explaining the origin of life on Earth?

• lightening causes organic matter to breakdown amino acids, 1st molecules on Earth

• biological molecules can form from simple molecules available on earth 3.5 Billion years ago

• life started outside of Earth since life can only come from life

• raw materials produce compounds that make first life forms

Tags

NGSS.HS-LS1-6

This experiment by Francisco Redi in 1668 helped disprove the theory of spontaneous generation and lead to which conclusion?

• Oxygen is needed to form life

• life is made spontaneously

• life only forms in warm environments

• only living things can make other living things

How did Endosymbiosis helped us understand how complex organisms emerged from simple organisms ?

• explains why prokaryotes don't possess a nucleus

• explains how prokaryotes and eukaryotes use oxygen to survive

• explains why bacteria and organelles are similar in size

• explains how life could have originated from a single cell

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

The chart shows how modern horses evolved over the last 55 million years, highlighting the bones of their legs found within rock layers. The chart is accurate because it shows the oldest fossils at the bottom and younger fossils at the top.

• true

• false

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

What trend was observed in hominid evolution based on fossil evidence?

• Tools were being used less and less

• Size of brain decreased

• size of jaw decreased

• hominids started walking on all fours instead of 2 limbs

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What was a success adaptation for hominids?

• a smaller jaw led to more tool use

• smaller brain led to more social language

• bigger jaw led to clearer words and better communication

• bigger brain led to language and communication

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

in the ocean, crabs with larger claws have a better chance of reproducing offspring than crabs with small claws. What will be the likely outcome after several generations?

• percentage of small clawed crabs will increase

• percentage of large clawed crabs will increase

• small clawed crabs will mutate into large clawed crabs

• small clawed crabs will grow larger claws

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4