The five basic types of chemical reactions are combination, decomposition, single
replacement, double replacement, and combustion.
FALSE
Organisms may play only one role in an ecosystem. ... Each of the organisms in an ecosystem fills the energy role of producer, consumer, or decomposer.
~~~~iln~~~~~~
Explanation:
I have a dog in my dog is a girl
The atoms undergo chemical changes.
New substances may be a product of the reaction.
False, pepsin and hydrochloric acid
