For my Entree, I did Homes for Tadpoles. I had to figure out what kind of water was best for a tadpole to live in: creek, salt, or tap water. The pH level needed to be around pH 8.0. I used litmus paper to measure the acidic level an used a chart on the container I got the paper from. I found out the creek water would be best to use. My sides were Cause and Effect and Transfer. Cause and Effect was about cause and effect relation ships in science. Transfer was about how transfer is included in multiple units of science. They connect with my Entree because cause and effect is why the tadpoles need to live in a pH level of 8.0, and transfer because it helps explain how litmus paper works.