Answer:
The retina is the back part of the eye that contains the cells that respond to light. These specialized cells are called photoreceptors. There are 2 types of photoreceptors in the retina: rods and cones.
Explanation:
Answer:
refrain from using or disposing of (something); retain for future use.
Explanation:
Answer:
Grain size, sorting and shape of particles in sediment or rock can influence how much empty space is available to store water (porosity) and the ability of groundwater to move through the material (permeability). Aquifers are water-bearing formations with good porosity and permeability and are important groundwater resources.
Explanation:
Cell membrane and the nuclear membrane
A. Consumer all the other ones don't make sense
