A scientist finds a fossil of a fish. What could be used to help the scientist infer the age of the fossil?
A. weather data from the area the fossil was found
B. index fossils found in the same rocks as the fish fossil
C. the life span of the same fish that live today
D. types of trees growing where the fossil was found

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.

Glucose is a form of sugar found in the blood cells use glucose as a source of energy, but too much or too little can cause serious health issues so, the body uses the hormone insulin to regulate glucose n the blood insulin maintain glucose levels in the blood if blood glucose lovels got very high, what would you expect to see happen to insulin levels?