Stellar equilibrium is a balance between what two things? a. outward and inward gravity. b. outward pressure from light and inward pressure from heat. c. outward pressure from hydrogen and inward helium. d. outward pressure and inward gravity

D) Outward pressure and inward gravity

D. Outward pressure and inward gravity

Explanation:

In the core of a star, hydrogen atoms fuse to form Helium atoms. This nuclear fusion reaction generates immense amount of heat and pressure. The pressure pushes the atmosphere of the star outwards. This pressure is balanced by the gravity of the mass pulling itself inside. Thus, an equilibrium is maintained. If a dis-balance is created, the star expands when there is excess pressure or collapses under its own weight.

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.