a random event kills off most the elephants in one area of africa the elephants left all happen to have shorter tails what mechanism is operating to change the genes in this population

Plant cells have which of the following characteristics? Select all that apply. cleavage furrows plus centrioles in cell division cell walls and plasma membranes large hypertonic vacuoles chloroplasts

Three-month-old brianna would be expected to have the lowest skin temperature when she's

How does light intensty effeat rate of photosynthesis?

Which of the following correctly compares the phosphorus isotopes 31P and 32P? A. 31P has 31 protons, whereas 32P has 32 protons. B. 31P has 31 neutrons, whereas 32P has 32 neutrons. C. 31P has 16 neutrons, whereas 32P has 17 neutrons. D.

If the density of basalt is greater than granite, then what can be determined about its specific gravity?

The biochemical analysis of different chlorophyll pigments in plants would be most useful in determining ... question 3 options:

The colors on the map above show the locations of the major tectonic plates that make up the Earth's crust. Which city on the map is most likely to experience a major earthquake?

Explain how the use of a chemical designed to kill grasshoppers could reduce the population of peregrine falcons.

The movement of water is able to transport minerals and nutrients. Which statement best explains why water is able to do this? A. Water is an excellent solvent. B. Water absorbs heat energy. C. Water has a density of one gram per milliliter. D.

Maintains a constant body temperature even when external temperature changes external temperature sets the internal temperature internal temperature constantly changes A. endotherm B. ectotherm C. poikilotherm