The human digestive system is a complex network of organs that work together to break down food into nutrients, which the body uses for energy, growth, and cell repair. The digestive process begins in the mouth, where food is mechanically broken down by chewing and chemically broken down by enzymes in saliva. The food then travels down the esophagu

DNA, or deoxyribonucleic acid, is the molecular blueprint for all living organisms. Its structure consists of two long strands of nucleotides twisted into a double helix. Each nucleotide is made up of three components  a sugar molecule (deoxyribose), a phosphate group, and a nitrogenous base. The nitrogenous bases are adenine (A), thymine (T), cyt

Photosynthesis is the process by which plants convert light energy, usually from the Sun, into chemical energy stored in the form of glucose. This process primarily takes place in the chloroplasts of plant cells, where the pigment chlorophyll absorbs light. During photosynthesis, plants take in carbon dioxide from the atmosphere through small pores

The water cycle, also known as the hydrological cycle, is a continuous process by which water circulates through the Earth's atmosphere, oceans, and land. This process involves four main stages  evaporation, condensation, precipitation, and collection. Water from oceans, lakes, and rivers evaporates due to the heat from the Sun, turning into water