The nutrient that is essential for survival and accounts for 60-75% of body weight is:

A. protein.

B. calcium.

C. water.

D. fat.

Jasper sleeps 9 hours the night before his science exam. His twin sister has the same exam and sleeps 6 hours the night before the exam. Afterwards they compare their scores for the exam. Which is the independent variable?

Which of the following is a function of the geosphere? a. facilitating the movement of water through spheres through transpiration b. providing a moderate, livable climate c. facilitating the process of photosynthesis d.

Biodiversity is defined as the variety of genes, organisms, species, and ecosystems and plays an important role in the long-term sustainability of life on Earth.

Changes in allele frequency are always driven by natural selection. True or False?

Energy stored in the bonds that hold together the atoms and molecules of all substances is called A. electrical energy. B. chemical energy. OC. kinetic energy. D. mechanical energy. Reset Submit

How will increasing the numberof yeast cells affect the rate of ATP production by the cells (inmoles ATP / hr) if the sugar concentration in the experiment isheld constant?

In an electrochemical cell, q = 0.0010 and k = 0.10. what can you conclude about ecell and e∘cell? in an electrochemical cell, = 0.0010 and = 0.10. what can you conclude about and? both ecell and e∘cell are negative.

Which pairing matches the type of substance with the item it donates?

Why to plants need to obtain atoms

Which of these types of governmental structure essentially controls every aspect of citizens' lives?