The body contains about 100 000 000 000 000 cells. Work out how many red blood cells there would be. Show your working

How does salinity differ in the oceans?

When heart muscle contracts it, does not squeeze the blood inside the heart creating pressure that pushes blood through the body. True Or False

When describing the process of natural selection, charles darwin claimed that:?

Suppose a plant has a unique photosynthetic pigment and the leaves of this plant appear to be reddish yellow. what wavelengths of visible light are absorbed by this pigment?

The nurse is caring for a client who has a tracheostomy tube with a high-volume, low-pressure cuff. what does the cuff prevent?

Which three elements do all four biomolecules have in common

What is the most likely reason why volcanologists often rely on model to study volcanic eruptions

What is a biome and what is the difference between a desert, forest, and grassland biome?

Describe how you get energy indirectly from the food that you eat

Which of the following best describes energy transformations in ecosystems? a. Most energy in a lower trophic level is passed to higher trophic levels. b. Heat is not a significant waste product as energy passes between trophic levels. c.