Many factors limit the growth of populations in ecosystems. Human activity can cause changes in ecosystems and can affect the limiting factors that act on populations. Which of the following factors that can limit population growth has been most affected by humans? A. size of natural habitats

B. drought and flooding

C. parasitism

D. predator-prey relationships

Which of the following structures is not found in both plant and animal cells? a) chloroplast b) cytoskeleton c) ribosomes d) mitochondria

Describe the function of the endomembrane system? what organelles are involved?

What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.