The food web in the diagram below shows interactions among organisms in a wetland. According to the diagram, which of these pairs of organisms are competing for the same food?

The figure below shows how the ocean is divided into zones, based on how much light penetrates the water and how close each zone is to land masses. Each of the zones is characterized by different organisms.

Which statement best describes humans?

Without bacteria, nothing else on Earth could live. This is primarily true because of the role they play in _________________.

what does abiotic mean?

Which cactus feature is an adaptation that protects it from predators?

Camouflage is an adaptation that can be useful to _____________________.

You can usually tell something about what a mammal eats by looking at its teeth. Which of these describes the teeth that herbivores usually have?

What are mammals?

What term is used to describe a group of rabbits of the same species that live together in the same forest at the same time?

what does biotic mean?

What best describes what tigers are