Your lab group is charged with the identification of an unknown creature. Your lab partners believe that it is a small annelid because of its worm-like appearance. You argue it is a nematode. To convince your lab partners, you point out certain distinguishing characteristics. Check the characteristics that are associated with nematodes. A. Nematodes secrete a cuticle which is made primarily of collagen
B. Nematodes possess both longitudinal and circular muscles
C. Their pseudocoelom functions both as a circulatory system and a hydrostatic skeleton
D. Fertilization takes place intemoly.

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons