A scientist studied four rock fossils that show evolution of the modern-day horse dating back to 35 million years, 15 million years, 8 million years, and 1 million years ago. Which rock fossil is most similar to the modern-day horse?

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

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

Fill in the blank with the best word to complete the sentence. white blood cells protect against and aid in blood clotting when injuries are sustained.