SCIENCE 3GE - TET HOLIDAY HOMEWORK

What material is a fossil made from?

• Rock

• Mud

• Shell

________ is when there is no more of an organism's kind left on Earth.

• Extinction

• Fossil

• Bone

________ is the trace of remains of living thing that died long ago.

• Extinction

• Fossil

• Bone

An invasive species is an organisms that introduce a (n)_____ ecosystem either by accident or on purpose by humans.

• new

• old

• native

________ work in state or nation parks. They lead tours and give visitors information about the parks.

• Botanists

• Wildlife biologists

• Park rangers

It's important to control the spread of invasive species to protect native ___________.

• food and water

• ecosystem

• predators

Invasive species can cause problems for the plants, animals, and other organisms that already live in an ecosystem because they compete for resources like ________ and _________.

• sun/ water

• water/ diseases

• food/ water

Invasive species can introduce new ________ or parasites to native species, causing harm to them.

• predators

• diseases

• invasive plants

Some invasive species are ______ that eat native species and can reduce their population.

• predators

• preys

• plants

Humans don't change their environment.

• True

• False