Match the term of "hierarchy" of life with examples of each below: - DNA
- heart of a human or leaf of a plant
- skeletal muscle, smooth muscle or cardiac muscle
- bacterium
- nucleus or chloroplast
- hydrogen (one proton and one electron)

1. atom
2. molecule
3. organelle
4. cell
5. organ
6. tissue

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Of your good in bio kusing a series of preliminary observations; pstate a problem developed from these observations, formulate a hypothesis, design an experiment to test the hypothesis

Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.