Chlorofluorocarbons (CFCs) are the primary substances responsible for ozone layer depletion.

Chlorofluorocarbons (CFCs) are the primary substances responsible for the depletion of the ozone layer.

Single-use plastics, such as bags and bottles, are a major contributor to plastic pollution in oceans.

Glucose is the main substrate for respiration in plants, as it is broken down to release energy.

Malaria is primarily transmitted by the female Anopheles mosquito.

Malaria is primarily transmitted through the bite of infected female Anopheles mosquitoes.

The male gamete in flowering plants is called pollen, which is produced in the anthers of the stamen.

The male reproductive part of a flower is called the stamen, which consists of the anther and filament. The anther is the part that produces pollen.

Nucleotides are the monomers that make up nucleic acids.

The net gain of ATP from one molecule of glucose during aerobic respiration is approximately 30-32 ATP, depending on the efficiency of the process.

The net gain of ATP molecules from one molecule of glucose during aerobic respiration is approximately 30-32 ATP.

The normal pH range of human blood is tightly regulated between 7.35 and 7.45, which is essential for proper physiological function.

The normal pH range of human urine is typically between 6.0 and 7.0, indicating it is slightly acidic.

The normal respiratory rate for a healthy adult at rest is typically between 12 to 20 breaths per minute.

The outermost layer of a plant stem is called the epidermis, which protects the plant from environmental damage.

The outermost layer of cells in a plant is called the epidermis, which protects the plant from environmental damage.

The outermost whorl of a flower is called the calyx, which is made up of sepals.

Normal human urine typically has a pH range of 6.0 to 7.0, which can vary based on diet and health.

The S phase (Synthesis phase) is where DNA replication occurs, resulting in the duplication of chromosomes.

The G1 phase is the first stage of interphase where the cell grows and prepares for DNA replication.

The phenomenon where one gene affects the expression of another gene is called epistasis.

Asexual reproduction allows for rapid population increase as it does not require a mate.

Sexual reproduction leads to genetic diversity, which can enhance survival in changing environments.

Recombinant DNA technology is used to enhance crop yield, provide pest resistance, and improve nutritional value, making option 'All of the above' the correct answer.

Recombinant DNA technology is used in various medical applications including the production of insulin, gene therapy, and vaccines.

Genetic similarity is the primary basis for the classification of living organisms.

Probiotics are beneficial bacteria that help enhance gut health and improve digestion.

AIDS is caused by the Human Immunodeficiency Virus (HIV), which is a virus.

Habitat destruction is the primary cause of biodiversity loss, as it leads to the loss of species and ecosystems.

Tuberculosis is primarily caused by the bacterium Mycobacterium tuberculosis.