Consider a multicellular organism whose cells have cell walls, but not chloroplasts. What kingdom does it belong to, based on its cellular characteristics?

What was the land like over 500 million years ago? what was under the sea?

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Which best describes this behavior? it is beneficial only to the males that do not fertilize eggs. it is beneficial only to the female workers that are not fertilized. it is beneficial to each one of the individual colony members. it is beneficial to the whole species, but not to all of the individual members.