Species of cells beneath the Earth’s surface. It has a cell wall, cilia (hair-like projections), flagella (a tail-like projection), free-floating DNA, and ribosomes. It is a simple, single-celled organism. The scientists who discovered the cell are attempting to classify it. What kind of organism is it?

When analyzing tree rings, what do scientists assume a thin ring indicates?

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?

If garbage is left on the street flies in microbes can arise from nothing to feed on it true or false