IB ESS Topic 2

After a forest fire, an ecosystem would start regrowth through -

• primary succession

• secondary succession

• climax community

• limiting factors

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

How does energy enter an ecosystem?

• sunlight

• soil

• animals

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following processes removes carbon from the atmosphere?

• Plant Respiration

• Auto and factory emissions

• Photosynthesis

• Animal Respiration

Tags

NGSS.MS-LS1-6

One characteristic feature of the tundra is that only the surface thaws in the summer and refreezes in the winter, leaving a permanently frozen subsoil. This characteristic is known as

• Hoarfrost

• Glaciation

• Permafrost

• Crystallization

Which biome covers most of the land mass near Earth's equator?

• Desert

• Grassland

• Tropical rainforest

• Temperate forest

__________ primary productivity is the total amount of energy that producers convert to chemical energy in organic molecules per unit of time.

• Net

• Total

• Gross

• Secondary

Tags

NGSS.MS-LS1-6

How do lichens contribute to primary succession?

• Lichens decompose organic matter from animals and plants

• Lichens begin to break down rock to form soil

• Lichens are nitrogen fixing bacteria

• Lichens convert carbohydrates into fossil fuels.

Tags

NGSS.MS-LS2-2

What is formed during primary succession that doesn't need to be formed during secondary succession?

• pioneer species

• soil

• climax community

• lichens

Which catastrophic event will most likely have the effect of returning an ecosystem to primary succession?

• A tornado

• A volcanic eruption

• A flood

• A drought

Tags

NGSS.MS-LS2-4

NGSS.MS-ESS2-2

Which of the following best describes primary succession?

• Volcano wipes out ecosystem that gradually grows back from ash covered soil

• Volcano creates a new island of rock that must break down to form an ecosystem

• Forest fire burns down forest that must bounce back over time

• Tornado destroys a crop that must slowly grow back over time.