What type of human inventions contribute to release of CO2 on earth

In each of the two tests (starch and sugar) a positive and negative control was used. What was the positive control in each of the tests and what was the negative control. Explain your answers.

Why is the cells ability to differentiate an advantage to multicellular organism

What type of mutation do scientists look for in a molecular clock

What does the blood transport to the body cells? A. nutrients & oxygen B. wastes & things the body can't use

Which of the following is a good predictor of biodiversity in terrestrial ecosystems? predator species in a community pollinator species in a community plant species in a community prey species in a community

If you made a change in the promoter sequence in the dna that inactivates the promoter, what would happen at the rna level? the mutation of the dna would be carried through to the rna sequence.

4) What is the main factor that contributes to carbons versatility? a. It has an equal number of protons and neutrons b. Its outer shell electrons are evenly spaced c. It has a four electrons in its valence shell d. It is a very large molecule

Write a paragraph explaining what photosynthesis and cellular respiration are and how they are dependent on one another. Include the reactants and products of the equations to support your statements. Use a minimum of 5 sentences.

Use the drop down menu to complete each statement about contour lines

Does the wire in the electrical cord of an electric kettle have a higher or lower resistance than the heating element inside the kettle