Mitochondrial dna contains a few codons that specify amino acids other than those specified by codons of nuclear dna. uses the same assortment of codons as does the dna in the nucleus. can never replicate itself because dna polymerases are not present in mitochondria. can never be transcribed or translated because rna polymerases are not in mitochondria. can never replicate itself because there are no promoter sequences to initiate transcription

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.