A is the correct answer
population density = # of individuals/amount of area.
Could you possibly tell me what exactly you need help with? As my computer already has viruses, I am surely not going to click on any of those. Sorry!
In agroecosystems, farmers practice monoculture. It is a practice of growing one type of crop in the same field year after year. Monoculture is an attempt to check herbivores from eating crops. As a result population of herbivores get reduced from the food webs. Using different types of agro-chemicals such as insecticides, pesticides, weedicides also reduces number species. Therefore, the most unusual characteristic of food webs in agroecosystems is lack of biodiversity.
A. The cold cream will drop to the bottom of the cup. When it warms, some of it will rise back to the surface.
1: I'm spooked.
2: here is my the hypothesis. don't know what you meant by data, as a hypothesis is before you collect data in a test.
I believe that the Hawaiian island chain formed from a line of underwater volcanoes erupting. The magma from the eruptions would've hardened forming once it reached the surface creating land.
I hope this is what you where looking for.