Unit 2.2

Front

What does the Law of Superposition help scientists determine?

Back

The relative age of rock layers.

Front

In which type of rock are most fossils found?

Back

Sedimentary.

Front

What are homologous structures?

Back

Structures in different species that are similar due to shared ancestry.

Front

Which organisms formed last on Earth: Jellyfish, Shark, Lizards, or Horses?

Back

Horses.

Front

Why is embryology evidence important?

Back

It helps us understand that we are related to other creatures.

Front

What is sedimentary rock?

Back

A type of rock formed by the accumulation of sediment.

Front

Define igneous rock.

Back

Rock formed from the cooling and solidification of magma or lava.

Front

What are vestigial structures?

Back

Body parts that have lost their original function through evolution.

Front

What is the significance of fossils in understanding Earth's history?

Back

Fossils provide evidence of past life and help determine the age of rock layers.

Front

What is the difference between homologous and analogous structures?

Back

Homologous structures share a common ancestry, while analogous structures serve similar functions but do not share a common ancestor.