What are the macromolecules dna and rna referred to as? proteins carbohydrates nucleic acids nextreset

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

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

Which could be a pathway of food through an ecosystem