Which of these is a pure substance? Question 3 options: a penny sugar ocean water iced tea

What is a nucleotide?

Which statement correctly compares nucleic acids and carbohydrates? They both contain phosphorus, but only nucleic acids contain hydrogen. They both contain carbon, hydrogen, and oxygen in a 1:2:1 ratio.

True or false, once respiration starts in a seed germination has begun.

What are responsible for recycling matter back into the food web once a organism has died.?

The great hornbill and the toucan both eat the same fruit, insects, and nuts. They both live in the rainforest. Their large bills function to get food and also as warning coloration.

Joe begins to experience mood swings and disturbed thirst and hunger. Imaging studies indicate that a brain tumor is the likely cause of these disorders. In what part of the brain is the tumor most likely located?

How to use light in energy to make glucose?

In prophase I of meiosis, crossing over results in

Why is salt so precious in the rain forest?

A human activity that could significantly decrease the amount of carbon dioxide in the air is (1) increasing the use of fossil fuel (2) controlling insect pests that eat stored grain (3) burning garbage and trash to generate electricity (4)