Answer:
glomerulus and glomerular capsule.
Explanation:
Here's an explanation to help answer the question
Eons are divided into eras, which are in turn divided into periods, epochs and ages. The terms "eonothem", "erathem", "system", "series", and "stage" are used to refer to the layers of rock that correspond to these periods of geologic time in Earth's history.
A change in the substance by temp, color,
Might be gene regulation, the process of turning genes on and off in normal development
Plastic - urban run off, wind, littering, rain, floods etc… plastic getting into the ocean can be highly dangerous for many species as it can kill animals such as fish and seahorses. many animals a year die from plastic in there system.