What is the name for the lowest point of a mechanical wave? A. Wavelength

B. Crest

C. Amplitude

D. Trough

Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time

Explain why ecosystem diversity results in species diversity in a healthy biosphere

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer