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Hi. I think the answer is A.
Answer
Feldspar a common mineral found in rocks have two cleavage plane and can be cleaved in two directions nearly at right angle . Mica is a group of sheet silica that have perfect basal cleavage plane, and can be cleaved only in one direction.
Answer:Small hydrophobic molecules and gases like oxygen and carbon dioxide cross membranes rapidly. Small polar molecules, such as water and ethanol, can also pass through membranes, but they do so more slowly.Semipermeable membranes, also termed selectively permeable membranes or partially permeable membranes, allow certain molecules or ions to pass through by diffusion.
Explanation: hope that helps
An alternation of generations for plants include a haploid gametophyte and a diploid sporophyte.
