Which of the following groups do all the organisms in an ecosystem ultimately depend upon?

Which of the following is an example of competition that could be found in a forest? question 14 options: deer eat berries and their droppings seed new areas creating more berry bushes two fox populations utilize the same rabbit population as their main food source two hawk populations utilize the same scorpion population as their main food source lack of sunlight due to changes in the seasons restricts the growth of certain plants

The first amino acid of a new polypeptide chain is

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water