Which of these true statements could contribute to a plausible hypothesis for why the alternation of generations evolved in the earliest land plants? select all that apply. o many gametophytes tolerate desiccation. gametophytes lack the ability to form rigid (lignified) vascular tissues. the biopolymer sporopollenin first evolved to protect the diploid stage of green algae. it allowed one generation to specialize in fertilization and the other in dispersal.

the reason the two sea urchins don't compete with each other for food, resources, etc. is because the urchins have adapted to the environment but they have also adapted to each other. this is most likely because the genes of the sea urchins.

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c

whats the answer to your question?