Muscular tissues or cells expand and contract to move the body
The correct answer to this question is "b)That our early ancestors were tailed primates." An elongated tailbone occurs rarely in some newborn children. The presence of a tailbone indicate is that t<span>hat our early ancestors were tailed primates. </span>
Answer:
Atoms are composed of particles called protons, electrons and neutrons. Protons carry a positive electrical charge, electrons carry a negative electrical charge and neutrons carry no electrical charge at all.
Explanation:
Explanation:
All organic compounds contain <u>carbon</u>
All organic compounds contain carbon, as well as hydrogen unless it has been replaced by another element
Answer:
a) when cells are small the movement of food and waste can be efficiently handled by the cell membrane
Explanation:
Cells need to get their nutrients and waste in and out of their cell membrane every quickly. Cells are hard workers anyway! The other options also don't make much sense. The cell shape doesn't mean much to their function, and size doesn't impact shape. The cell's internal parts (mitochondria, vacuole, etc) don't support the cell membrane, they have their own functions to focus on. Cells don't work together in tissue but they can interact with each other when needed.
