What would happen without excretory systems in humans?

A) Wastes would build up in blood and damage the body.

B) Blood would not circulate through the body.

C) Oxygen would not enter the blood stream.

D) Nutrients would not be absorbed.

Are reactants in the process of cell respiration. A) Water and sugar B) Sugar and oxygen C) Water and oxygen D) Water and carbon dioxide

Name the organelles that can be seen only by light microscope. And The organelles that can be seen only by electron microscope And those which can be seen by both organelles.

Which of the following statements is not required by animals to control body temperature? A. Animals must switch between ectotherm and endotherm methods. B. Animals must find a source of heat. C. Animals must conserve heat when temperatures drop. D.

Rats deprived of food and water that are placed in a novel environment may choose to eat and drink first. explore the environment first. be too confused to do anything. defecate first. show obvious signs of distress.

Which three of the statements are true? A. Amphipathic (amphiphilic) lipids are the structural basis of biological bilayer membranes. B. The tendency of water to minimize its contact with nonpolar substances is called the hydrophobic effect. C.

Student who is calculating the average mass of plastic bags placed in a landfill each year is: A; analyzing data b; making prediction c; stating conclusion d; collecting data

Where do the trade winds occur?

What do holes in volcanic rock illustrate about the condition in which it was formed? Wright a short summery paragraph.

True or false. A good experiment consists of positive & negative controls, an altered variable to be tested and all other variables kept the same

Which statement is true about charles darwin? he was the first to outline the modern theory of evolution. he was the first to ask questions about the origins of life. he was the first to publish the traditional belief of evolution.