A motor is used to produce 8.0 waves each second in a string. What is the frequency of the waves?

Which type of neuroglia is found outside of the brain?

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

Archaebacteria use for movement. celia flagella pili cell walls