I believe it's plants. Plant's food is the sun and plants provide the energy to the whole food chain.
The Grand Canyon is made of sedimentary rock that contains fossils up to 1 billion years old. and the several upper layers of rock contain terrestrial, or land-based, fossils, such as dragonfly wing impressions and the footprints of scorpions, centipedes, and reptiles
D. Autotrophs produce organic molecules
Answer: DHT is an androgen and helps give males their male characteristics. DHT is thought to cause hair follicles to miniaturize, and this contributes to male pattern hair loss. By the age of 50 years, over half of the men in the U.S. will probably experience hair loss mediated by DHT.
Potassium has the greatest influence on the resting membrane potential. Resting membrane potential is caused by the differences in the concentrations of ions inside and outside the cell. At resting membrane potential there are more sodium ions outside the neuron and more potassium ions inside the neuron. For a neuron the resting membrane potential is about -70 mV.