Q: Two species that share what cannot coexist in a community? Choices: - color - mood - language - same niche A:
same niche

(Question)
Q: What gas is released into the atmosphere when fossil fuels are burned? Choices: - hydrogen - glucose - helium - co2 A:
(Answer)
co2

Ques: Q: The rate at which an unstable isotope decays is measured in a unit known as what? Choices: - full-life - staying-life - half-time - half-life A:
Ans: half-life

(Q).
Q: What type of rocks form from cooled magma or lava? Choices: - granite - sedementary - metamorphic - igneous A:
(A).
igneous

Ques:Q: Vascular plants evolved what basic structures to collect sunlight? Choices: - flowers - stems - roots - leaves A:

Ans:leaves

Q: Functional groups are groups of atoms that occur within molecules and confer specific chemical properties to those molecules. they are found along the "carbon backbone" of what? Choices: - inorganic molecules - functional molecules - micromolecules - macromolecules A:
macromolecules