4.4 Quiz RETAKE

match each word with its definition

• :)

• :)

• abiotic

• something that was never alive

• biotic

• something that is alive or was once alive

Tags

NGSS.MS-LS4-1

Which of the following factors is considered biotic?

• Rocks and minerals

• Water and air

• plants and animals

Answer explanation

Biotic factors are living components of an ecosystem. Plants and animals are considered biotic because they are living organisms, while rocks, minerals, water, and air are abiotic factors, as they are non-living.

Which of the following factors is considered abiotic?

• plants

• rocks

• animals

Answer explanation

Rocks are considered abiotic factors because they are non-living components of the environment. In contrast, plants and animals are biotic factors, as they are living organisms.

Tags

NGSS.MS-LS2-3

⭐Categorize the following as a biotic factor or an abiotic factor.​⭐

Groups:

(a) biotic

,

(b) abiotic

• rain

• tree

• water

• bacteria

• temperature

• soil

• platypus

• grass

A dead decomposing organism is an ____ factor.

• biotic

• abiotic

Answer explanation

A dead decomposing organism is considered a biotic factor because it is derived from a living organism and contributes to the ecosystem's biological processes, such as nutrient cycling.

Match the following

• keystone species

• a species adapted to thrive in a variety of habitats

• indicator species

• 
  species that have a large impact on their environment relative to their abundance

• specialist species

• a species adapted to thrive in a specific habitat

• generalist species

• species monitored for early warnings that a community or ecosystem is being damaged

Where would you expect to find the MOST genetic diversity among humans?

• in a city

• in a small town

• in a tribe

Answer explanation

Cities typically have a larger and more diverse population, leading to greater genetic diversity due to increased mixing of different ethnicities and backgrounds. In contrast, small towns and tribes tend to have more homogenous genetic pools.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

In which ecosystem would you expect to find the MOST biodiversity?

• a desert

• a pond

• a rainforest

Answer explanation

Rainforests are known for their high biodiversity due to their warm climate, abundant rainfall, and complex ecosystems, supporting a vast array of plant and animal species. In contrast, deserts and ponds have significantly lower biodiversity.

Tags

NGSS.MS-LS2-5

Which of the following is an example of human activity contributing to extinction?

• pollution

• natural selection

• seasonal changes

Answer explanation

Pollution is a human activity that negatively impacts ecosystems, leading to habitat destruction and species decline, contributing to extinction. In contrast, natural selection and seasonal changes are natural processes.

Tags

NGSS.MS-ESS3-4

What is the current extinction rate?

• The rate at which species go extinct due to human activity

• The natural rate at which species go extinct

• The rate at which species are born

Answer explanation

The current extinction rate refers specifically to the rate at which species go extinct due to human activity, highlighting the impact of human actions on biodiversity.

Tags

NGSS.MS-LS4-1