Answer is A.. hope this helps:)
D. preserve ecosystems whilst providing for human needs.
the actual definition for sustainability is meeting the needs of the present without compromising the ability of future generations to meet their own needs.
The first one is have the refrigerant level checked by a qualified professional. The technician will be checking any possible leak, damage and conduct test on the system. Second is to ensure airflow. Change the filter regularly, usually about every three months or maybe monthly, depending on its usage. Have the coils cleaned by a professional if it is already dirty. The third method is to not use your air conditioner when the outside temperature is below 60º. You will be saving energy and money on utility costs by just opening the windows on cool days.
All of the traits combined that actually show up in the individual - this is the phenotype (the physical, observed expression of genes
Each person has two genes. The DOMINANT TRAIT will show up if that trait is present on one of the two genes.
The RECESSIVE TRAIT can be hidden by the dominant trait. It will only show up if a person has both genes for that trait.
An observable form of an inherited characteristic - A trait
The traits that an individual has inherited, including the ones that do not show up - this is the genotype, as it accounts for the set of genes in our DNA
