Which of the following may be used to refer to water?
select all that apply.
a. it is an element made of only one type of atom.
b. its chemical formula is commonly shown as h2o.
c. its structure is two oxygen atoms bonded with one carbon atom.
d. its structure is two hydrogen atoms bonded with one oxygen atom.
e. its chemical formula is commonly shown as co2.
f. it is a molecule made of more than one type of atom.
g. it is a compound made of only one type of atom.

Most of earth’s fresh water is found in oceans and seas stored in glaciers and ice caps groundwater stored beneath the surface found in lakes, rivers, streams, and reservoirs

Chinese privet is a plant that is native to china. over 150 years ago, chinese privet was introduced to the united states as a fast-growing shrub that serves as an excellent privacy hedge. with no natural herbivore, chinese privet quickly established itself and spread in natural areas throughout the southeast and eastern seaboard of the united states. its dominance in these areas has jeopardized the survival of native plant species. chinese privet provides evidence that introducing non-native organisms can cause environmental damage integrated pest management strategies will not decrease chinese privet populations american gardeners can easily control the spread of chinese privet non-native plant species have type i survivorship curves

What is thought to have caused the mass extinction at the end of the cretaceous period?