What is the function of the organelle labeled "A" in the diagram below?

Compare and contrast nutrient limitation in soil vs. nutrient limitation in aquatic ecosystems

What are two reasons for why a species might disappear from the fossil record?

Which strategy is an example of how companies may upgrade themselves to meet changing customer preferences? a.doing door-to-door sellingb.using billboards to advertise the productsc. making online shopping services availabled.giving discounts on products