Answer: Excretory
Explanation: My grandpa went through this recently and I had to learn all about it. :(
Answer:
Let's find out if exhaled air contains carbon dioxide.
Take a glass and fill it up with some limewater. ... The limewater turns milky. This goes to show that the carbon dioxide present in the exhaled air turns the limewater chalky. The limewater turns from clear and colourless to chalky.
Explanation:
Answer:
I would go with B:
The body must maintain homeostasis so that the internal environment stays the same if the outside
A lipid containing a phosphate group in it's molecule.
Answer:
Anatomy. Species may share similar physical features because the feature was present in a common ancestor (homologous structures).
Molecular biology. DNA and the genetic code reflect the shared ancestry of life ...
Biogeography ...
Fossils ...
Direct observation
Explanation:
