What is a mental representation?

Which of the following is NOT a shared characteristic of mammals?

The most successful mammals belong to the marsupials group.

Which of the following does NOT describe phylum Ascomycota?

The choanoflagellates are within this supergroup.

This scientist developed the field of paleontology

The first plants to colonize land were the

The ranges of the red-legged frog and the yellow-legged frog overlap in California. The red-legged frog (Rana aurora) breeding season lasts from January to March. The closely related yellow-legged frog (Rana boylii) breeds from late March through May. What type of reproductive isolating mechanism is mainly responsible for keeping these two species separate?

Scientists developed the ________ model after their studies of the fossil record revealed that some species appear quite suddenly and then remain essentially unchanged phenotypically for a long period of time.

Which of the following lists best describes the features used to classify an organism as a member of domain Bacteria?