Answer:
thermal energy to heat our homes; mechanical energy to transport people and things; and electrical energy to power just about every other technology we use.
Explanation:
The correct answer is :
Some substances but not other can cross the (blank ) membrane of a cell. The blank is to be filled with either cell or plasma. Cell membrane or plasma membrane is the living boundary of a cell which is made of phospholipid. It is a semi-permeable or differentially permeable membrane. It only allows small and non-polar molecules to pass through it. It prevents polar ions or molecules to pass through it
Cell divison is necessary to replace cells that are worn and aging. Cells do not have an indefinite life span. Fo example, the life span of a red blood cell is about 120 days.
the two main skeletal systems to support the tissue of the body is bone and cartilage
hopefully this will help
