Two chemicals react in an endothermic reaction. what can be known about this reaction?
a: the new substance will need more energy to form its chemical bonds than the old substance will release.
b more energy will be released from the old substance than the new substance will need to form its chemical bonds.
c: a precipitate will form as a result of the reaction.
d: a gas will form as a result of the reaction.

The softest and hardest minerals are: softest hardest

Ineed this now one scientist feels that the changes in global climatic patterns may be good for the health of the biosphere. another scientist feels that sharp changes in climatic patterns could result in the extinction of the biosphere. which of these is the most likely reason the two scientists gave conflicting opinions on the impact of changes in the global climatic pattern? they do not have enough knowledge on the topic. they did not discuss the issue among themselves. they believe conflicting opinion strengthens science. they study different areas of science and have different scientific focuses.

Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)