Which event occurred in the Cenozoic era?

• first mammals

• spread of mammals

• first flowering plants

• spread of ferns and conifers

Tags

NGSS.MS-LS4-1

What were Earth's earliest multicellular organisms?

• bacteria

• land plants

• vertebrates

• invertebrates

The first birds evolved during the ____ era.

• Mesozoic

• Paleozoic

• Cenozoic

• Jurassic

Tags

NGSS.MS-LS4-1

An animal without a backbone.

• invertebrate

• vertebrate

• reptile

• mammal

Tags

NGSS.MS-LS4-2

An animal with a backbone.

• invertebrate

• vertebrate

• mammal

• reptile

A vertebrate whose body temperature is determined by the temperature of its environment, and that lives its early life in water and its adult life on land.

• reptile

• amphibian

• mammal

• vertebrate

A vertebrate whose temperature is determined by the temperature of its environment, that has lungs and scaly skin, and that lays eggs on land.

• reptile

• amphibean

• mammal

• vertebrate

When entire species of living things die off at the same time.

• mass extinction

• extinction

• factors

• floods

Tags

NGSS.MS-LS4-1

A vertebrate whose temperature is regulated by its internal heat, and that has skin covered with hair or fur and glands that produce milk to feed its young.

• mammal

• reptile

• amphibian

• vertebrate

Tags

NGSS.MS-LS4-2

What period did mammals first appear during?

• Jurassic

• Triassic

• Crecaceous

• Quaternary

Tags

NGSS.MS-LS4-1