A scientist wants to monitor the amount of acid precipitation falling into a watershed.
Which tool would be the best for the scientist to use?
A. pH meter
B. Dissolved oxygen sensor
C. Satellite images
D. Bioindicators

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

What is the maximum number of electrons that an atomic orbital can contain?

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion