What is a relationship where one organism benefits while the other gets nothing

How is density used to determine if a material will sink or float in a liquid

9. Which sample contains a mole of atoms? A) 23 g Na B) 24 g C C) 42 g Kr D) 78 g K

What can you conclude about red visible light waves compared to blue visible light waves?

How many electrons does magnesium have in its highest energy level?

The energy available to primary consumers in an energy pyramid is 800 kilocalories. Approximately how much energy is used by the primary consumers for their physical functions? A. Less than 720 kilocalories B. 720 kilocalories C. 880 kilocalories D.

What system of the body maintain homeostasis by giving it the nutrients it need to perform different functions

how do geologists use seismic waves to locate an earthquakes epicenter

A sample of glass bead weighs 34.5g. The beads are heated to 100.0C in a boiling water bath and poured into a beaker containing 100.0g H2O at 25C. when thermal equilibrium is reached, the temperature of the glass and the water is 29.9C.

Why do the elements at the bottom of the periodic table have lower ionization energies than their group/family partners at the top of the periodic table?

What is mass? How is the mass of an object determined?