Which of the following best describes a population?

The community of a pond is made up of all the

Thick fur keeps deer warm in a cold environment is an example of

For evolution to occur in a population, individuals with a trait that is "naturally selected for" must

Some organisms are more likely to survive because they

The change in the genetic characteristic in a population from one generation to the next is

Some snakes produce a powerful venom that paralyzes their prey. This poison is an example of

Which invertebrates are generally small, allowing them to live on little food and to hide from enemies?

Vertebrates are the most advanced organisms on Earth. The traits that make all of the animals in this section special are their spinal cords and vertebrae. It's all about having a series of nerves along your back.

Most scientist classify organisms into

Single celled and many celled organisms that may be plant-like, animal-like or fungus- like are called

Single celled organisms that lack nuclei are called

Organisms whose cells have nuclei and cell walls but no chlorophyll are called

Which of the following kingdoms includes algae?

Which two kingdoms contain organisms that can use energy from the sun to make food?

Which two kingdoms contain organisms that break down dead organisms