30-100 different molecule types
Spines primarily have a protective function in plants. The spines can be sharp, and form a physical barrier against herbivores which may want to feed on the plant. Spines however also have other benefits. The spines on a jumping cactus allow segments of the cactus to stick to passing large animals or humans, thereby allowing the cactus to spread to other areas through asexual propagation. Spines are modified leaves, and spines have a much lower surface area than leaves, and therefore can reduce transpirative loss of water by the plant during harsh droughts. Some trees in alpine regions, such as pine trees, have developed spine-like leaves to prevent the accumulation of snow in the branches.
D. Daisy
Idk hope this helps!!
Answer A fabric used to sew the dresses a company sells should be correct. Because renting a factory and fixing something is a Fixed Cost. Let me know if that’s right!
The second one probably because of the law of conservation of mass where mass is not created or destroyed, so the mass has to be the same.
