The following structures are found on the underside of fern leaves (microphylls) and contain sporangia:

A - sori

B - rhizomes

C - megaphylls

D - archegonia

Otis is making a poster about how to preserve sand along the beach. Which of the following suggestions should Otis include on his poster? A) Build a seawall near the coastline. B) Put sandbags along the coastline.

What is the role of genes in evolution?

What type of mammal is a manatee is it a monotreme, marsupial or a placental

Which of the graphics best represents an animal cell? A or B? animal or plant cell?

One of the kinds of particles found in the nucleus of an atom

A population of lizards that originally had no predators lived on a small isolated island. Predators of the lizards were accidently introduced to the island from a visiting ship.

If there are 50 kcal of energy in the tertiary consumer trophic level, how many kcal would you expect to find in the primary consumer level

The plasma membranes of some plant cells use transport proteins to move protons out of the cell against their concentration gradient (from areas of low proton concentration to areas of high proton concentration). this is an example of:

What is algae? and where is come from?

Are mushrooms biotic or abiotic