what are elements that lose electrons and form positive ions named?

a. metals
b. minerals
c. nonmetals
d. ores

Ascientific idea becomes valid when it is what?

Babies with very low or very high birth weight are less likely to survive. observe a graph of the data.

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?