Genes, chromosomes, and DNA are important structures for processes related to heredity and reproduction. How are these structures related?
Many chromosomes make up a gene, and many genes make up DNA.
A
B
A chromosome is the same thing as a gene and both are made of DNA.
С
DNA is made up of chromosomes, and chromosomes are made of genes.
D
Genes are sections of DNA that make up a chromosome.
2

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primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

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.