Mammals that lay eggs, such as the platypus or echidna, are called which of the following?

Mammals that lay eggs, such as the platypus or echidna, are called which of the following?

Which of the following is not a primary producer?

Which of the following is not a primary producer?

Which of the following would be considered a primary consumer?

Which of the following is an example of primary consumers?

Which of the following would be considered a primary consumer?

Which of the following is an example of primary consumers?

Remoras are fish that use their sucker-like mouths to attach onto the skin of other animals. They often attach to sharks and consume dead skin cells, any food discarded from the shark, and other organisms that may feed on the shark itself. The relationship between the shark and the remora is an example of which of the following?

Which of the following is true about competition?