Which process (es) introduce oxygen into the ocean.

mixing only

industrial wastes

mixing and photosynthesis

chemical equilibrium

Around 50000 rainforest species go extinct every year. true or false

In a fern, the prothallus is the gametophyte true or false

Which two statements are true for fungi? They can produce their own food because they have chlorophyll. They often form symbiotic relationships with trees. They digest food externally.

The best place to search for black holes is in a region of space that

What types of materials are common in lake

In garden peas, the axial (A) flower position is completely dominant to the terminal (a) flower position. You cross a true-breeding axial flowering plant to a true-breeding terminal flowering plant.

What is leeuwenhoek most marvelous discovery?

What is the main job of DNA?

Which process most likely forms rust on rocks? A. chemical weathering by oxidation B. mechanical weathering by ice wedging C. mechanical weathering by wind D. chemical weathering by acid rain Question Resources

11. What is the basis for classification of bacteria?