Answer:
Water, carbon dioxide, and oxygen
Explanation:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
Early changes in the brain during exposure to addictive drugs involves the insertion of AMPA receptors into neuron membranes located within the VTA. AMPA receptor is an ionotropic transmembrane receptor for glutamate that is responsible in mediating fast synaptic transmission in the central nervous system. They provide initial depolarization that ultimately results in NMDA receptor activation.
D. ice core samples for the arctic and anarctic
There is a magnifying glass, which also helps to see things up close, except that it cannot see small details like hair follicles or someone's DNA. There is also a telescope, which also helps see things closer but it is used to see things in space, such as planets, galaxies, and stars.
Water’s molecular structure affect solubility of substances on Earth by a polar arrangement of oxygen.