Ask a New Question
Menu

Question

Which major environmental change is occurring today that could cause the next mass extinction?(1 point)
Responses

extreme weather events
extreme weather events

climate change
climate change

oil spills
oil spills

deforestation

What is the difference between a mass extinction and a regular (background) extinction?(1 point)
Responses

Mass extinction can be caused by ecological factors like climate change and loss of habitat.
Mass extinction can be caused by ecological factors like climate change and loss of habitat.

Mass extinction occurs over a long period of time.
Mass extinction occurs over a long period of time.

Mass extinction is ongoing and is a regular process that results from evolution.
Mass extinction is ongoing and is a regular process that results from evolution.

Mass extinction involves many species over a short period of geologic time.

During the K-Pg mass extinction event, soot and ash were thrown into the atmosphere, darkening the sky for months. Some mammals were able to survive and proliferate. Which factor contributed to this success?(1 point)
Responses

Many mammals developed the ability to fly, allowing them to escape the impact site.
Many mammals developed the ability to fly, allowing them to escape the impact site.

A decrease in oceanic and lake habitat, leading to marine mammal evolution.
A decrease in oceanic and lake habitat, leading to marine mammal evolution.

The ability to regulate their body temperatures in the face of reduced sunlight and colder temperatures.
The ability to regulate their body temperatures in the face of reduced sunlight and colder temperatures.

There were new predators because the dinosaurs were instantly killed.

How is climate change today similar to the major K-Pg extinction event that ended the reign of the dinosaurs?(1 point)
Responses

Catastrophic weather events are occurring that are wiping out entire ecosystems.
Catastrophic weather events are occurring that are wiping out entire ecosystems.

New species are emerging in the absence of extinct species.
New species are emerging in the absence of extinct species.

Individuals that can’t adapt are dying, and species are going extinct.
Individuals that can’t adapt are dying, and species are going extinct.

The environment is changing rapidly, and new ecosystems are forming, causing mass extinctions.

Fossils provide evidence that best helps scientists determine changes over time in(1 point)
Responses

the environment.
the environment.

the emergence or extinction of species.
the emergence or extinction of species.

the number of individuals in each species.
the number of individuals in each species.

the number of species in an environment.

1 answer

Here are the responses for each question based on the information provided:

  1. Which major environmental change is occurring today that could cause the next mass extinction?

    • Response: climate change

  2. What is the difference between a mass extinction and a regular (background) extinction?

    • Response: Mass extinction involves many species over a short period of geologic time.

  3. During the K-Pg mass extinction event, soot and ash were thrown into the atmosphere, darkening the sky for months. Some mammals were able to survive and proliferate. Which factor contributed to this success?

    • Response: The ability to regulate their body temperatures in the face of reduced sunlight and colder temperatures.

  4. How is climate change today similar to the major K-Pg extinction event that ended the reign of the dinosaurs?

    • Response: Individuals that can’t adapt are dying, and species are going extinct.

  5. Fossils provide evidence that best helps scientists determine changes over time in:

    • Response: the emergence or extinction of species.