1. What do bacteria do in a healthy gut microbiome? 2. What is one type of bacteria found in a healthy gut microbiome?

3. What is a type of harmful bacteria found in the human gut microbiome?

4. What do harmful bacteria do in the gut microbiome?

Which of the following is a physical change? a. burning a piece of wood b. sawing a piece of wood in half c. rust forming on an iron fence d. a copper roof changing color from orange to green

In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.

How do you interpret a chromagram for what mixtures contain?