What are the two most important alkali metals? why are they so important?

sodium and potassium; lithium and potassium, or francium and lithium are important alkali metal. they are so reactive with air and water, they are generally stored in oil. Cesium and rubidium are used to make atomic clocks. Cesium clocks are considered the most accurate of all clocks. Sodium and potassium both play an important role in biological life on Earth.They are water soluble, basic and very reactive. Alkali metals are the least electronegative group, and tend to react best with nonmetals and water. The sodium and potassium pump are important in maintaining equilibrium amounts both inside and outside the cell.

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.