As energy moves through trophic levels in an ecosystem the amount that is available decreases. ... A: Energy flows in a food web by being transferred to and between organisms as they undergo photosynthesis, are consumed by another organism, or decompose.
Answer : The product in the given balanced reaction is, sulfur dioxide
.
Explanation :
The balanced chemical reaction will be,

This reaction occurs when sulfur react with oxygen gas to give sulfur dioxide gas as a product.
In the given balanced chemical reaction, sulfur (S) and oxygen gas
are the reactants and sulfur dioxide
is the product.
Hence, the product in the given balanced reaction is, sulfur dioxide
.
A) a common ancestor
Homologous structures are structures that are similar in related organisms. There is a basic pattern of bones which can be inherited from a common ancestor
Epithelial tissue <span>covers the body surface and forms the lining for most internal cavities. </span>
I believe the awnser is B