What atoms are found in proteins and what atoms are found in nucleic acids

What four factors affect transpiration in a plant?

All the biotic and abiotic factors in a particular area

Where does filtration occur in the urinary system?

Give three examples of animal organ

Describe each of the two paths viruses may follow once they have entered a cell.

Karina is looking at a cell under the microscope. it is the only cell in the organism, which has a cell wall and no nucleus or membrane bound organelles. in which kingdom should this organism be classified?

How is the age of the solar system estimated and how old is it?

Protein that regulate the cell cycle are known as

What is the term for a preserved footprint left behind any animal

how can two species that look very different from each other be more closely related than two other species that look similar to each other