What is the term for a substance with a pH above 7.0; also called basic?

What is the term for a measure of land area that equals 43,560 square feet or 4,047 square meters; a square area about 208 feet by 208 feet or 64 meters by 64 meters?

What is the term for a substance with a pH above 7.0; also called alkaline?

What is the term for the green pigments that enable plants to take energy from sunlight and make food?

What is the term for a mixture of dead and decaying organic matter (leaves, garbage) and soil; bacteria in the soil break down the organic matter into soil and nutrients?

What is the term for the separation of plant nutrients from soil samples by dissolving them?

What is the term for an interacting system of a biological community and its non-living environment?

What is the term for food for horses or cattle?

What is the term for the place where a population (e.g., human, plant, animal, bacteria) lives and its surroundings, both living and non-living?

What is the term for very decomposed organic matter (remains of plants and animals); contains mainly carbon, nitrogen, phosphorus and sulfur?

What is the term for essential chemical elements needed in large amounts for the healthy growth of plants?

What is the term for living organisms that are so small that individually, can only be seen through a microscope?

What is the term for a substance with a pH of 7.0?

What is the term for essential chemical elements needed for growth of healthy plants?

What is the term for remains of plants and animals?

What is the term for the top layer of the earth's surface; a mixture of mineral, organic matter, and living things in which plants grow?

What is the term for the upper layer of soil; contains the greatest amount of decomposed organic matter and plant nutrients?

What is the term for the physical and chemical breakdown of rocks into smaller particles, minerals and soluble nutrients?

What is the term for a diagram of the amounts and types of foods needed for healthy human growth created by the United States Department of Agriculture?