The analysis of water in a lake or stream depends upon more than one field of science or body of
knowledge. suppose you stumble across a portable water-testing lab on a riverbank, and you find two
testing stations: (1) a package of ph (acid/base) test strips and a digital thermometer, and (2) a light
microscope and glass slides. but you find no scientists.

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

The activity of the modern sample is 1.10 bq . how long does that measurement take?

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material