4. Identify a further area for experimental investigation into transport across membranes. This may be a new investigation, or a further investigation of osmolarity.

Heredity has an impact on personal health, but environmental factors are important as well. select the best answer from the choices provided

Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 → 2fe2o3. identify the value of x that will balance the equation.

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit