Which is a process that causes an organism's poorly suited characteristics to disappear?

death rate

adaptation

natural selection

Which of the following elements matches the criteria below? 1. Found in period 2 2. Can gain or lose 4 electrons to become its nearest stable noble gas a. F b. Be c. O d. C

What is gay-lussac law?

Which element has atoms with the greatest ability to bond to another in large, extended structures? A) Lithium B) Oxygen C) Fluorine D) Carbon Explain your choice.

Water molecules are polar, with the Select one: a. oxygen side being slightly positive and the hydrogen side being slightly negative. b. oxygen side being slightly negative and the hydrogen side being slightly positive. c.

How many moles of oxygen gas are produced from the decomposition of six moles of potassium

The specific gravity of iron is 7.87, and the density of water at 4.00 ∘C is 1.00 g/cm3. You can use this information to find the density of iron. Find the volume occupied by 4.50 g of iron.

The volume of a gas is 93 ml when the temperature is 91? c. if the temperature is reduced to 0? c without changing the pressure, what is the new volume of the gas?

15.434 g of kcl (m. m 74.55 g/mol) is dissolved in water up t a total volume of 500.0 mL. the density of this solution is 1.02 g/mL. what is the concentration of he solution in molality

Determine the molar mass of an unknown monoprotic acid to two decimal places if 20.01 ml of a 0.098 m naoh solution were used to titrate 0.215 g of the unknown acid

A diatomic molecule with a triple covalent bond is A. H2 B. N2 C. O2 D. Br2 (P. S. The answer turned out to be B. N2)