Evolution

The law of superposition states

• the oldest rock layer is on the top, the younger rock layer is on the bottom
• rock layers are always in sequence from oldest to youngest
• the youngest rock layer is on the bottom and the oldest is on the top
• the oldest layer is on the bottom and the youngest is on the top when it is undisturbed

What can help a scientist know the approximate age of bones?

• the soil it is found in
• the index fossils in the area
• the type of rock it is formed in
• absolute dating

When a layer of rock cuts through the other layers

• the layer that cut through is younger than the layers it cuts through
• the layer at the bottom is younger
• the layers are the same age
• the index fossil is destroyed

Scientist find dinosaur fossils in the bottom of a cliff and mammals fossils in the middle layer, what can be inferred?

• dinosaurs ate plants
• dinosaurs were eaten by the mammals
• they lived at the same time
• dinosaurs lived before the mammals

Tags

NGSS.MS-LS4-1

NGSS.MS-ESS1-4

Ostrich wings are examples of

• homologous structures
• vestigial structures
• adaptations
• traits

Tags

NGSS.MS-LS4-2

Dolphins have the same arm structure as wolfs, what type of evidence for evolution does this represent?

• DNA
• vestigial structures
• homologous structures
• embryology

Tags

NGSS.MS-LS4-2

What would indicate that a series of fossils represent evolution?

• the fossils were identical
• the fossils were found in the same layers of rock
• the fossils show similarities
• the fossils were completely different

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1

Why do embryologist study embryos?

• to see if they are related
• to understand adaptations
• to determine the age
• to learn what parents are vestigial

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

What is embryology?

• the age of organisms
• the oldest stage of development
• the life span of an organism
• the earliest growth stage of development

Tags

NGSS.MS-LS4-3

Change over time is

• evolution
• generation
• growth
• biogenesis

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1