Which of the following chemical equations is balanced?

A. H2 + Cl2 4HCl

B. 4H2 + 2O2 2H2O

C. 4Fe + 3O2 2Fe2O3

D. 2Fe + HCl FeCl2 + H2

Samuel ate some vegetable soup. What process is at work to allow Samuel to break down the soup so that his body will be able to produce energy? growth absorption excretion digestion

In 1944 charlie chaplin was involved in a legal battle over the paternity of a child born to joan berry, a young starlet. the baby was blood type b, the mother a, and chaplin o.

Why might rain forests in South America and near the equator be so productive?

In a plant's life cycle, how many sporophyte generations occur between one gametophyte generation and the next time that eggs and sperm are produced? A) Zero B) One C) Two D) Four

Describe three structures found in plant cells but not animal cells. describe the function of each structure, and how each benefits plant cells but is not necessary for animal cells.

Under what circumstances does membrane transport always require energy?

What is one disadvantage of using plasma gasification to detoxify hazardous waste?

Euglena use which structure for movement? A. cilia B. flagella C. pseudopods D. they do not move

1. What is a reproductive process in which a cell's genetic information is duplicated and then divided to produce a single identical daughter cell from an outgrowth of a larger parent cell? A. production of spores B. budding C. binary fission D.

True or false? biologists studied the effects of forest fragmentation by calculating the difference between the amount of plant biomass in the edges of forest fragments and the interiors of unfragmented forest.