Where does the oxygen we breath come from

What three elements have strong magnetic properties?

What does a positive result for the endospore stain indicate about the organism?

1. What are two advantages of two disadvantages of hydropower?

Two scientists do not agree on which type of grocery bag is better for the environment. What is the most likely outcome of their disagreement? A. Both types of grocery bags will be discontinued B. More studies will take place on the issue C.

Which of the following sequences represents the hierarchy of biological organization from the most inclusive to the least complex level?

What are reasons scientists use models? To study objects far away To study objects too large To study objects too small. To study objects easily found in a lab. To study events that take place over long periods of time.

1. true false Carbon atoms form the building blocks of most living things.

Inhibiting enzymes involved in cell wall synthesis leads to which of the following? A) cell death by osmotic lysisB) a reduction in protein synthesisC) the incomplete synthesis of the bacterial cell wallD) a reduction in the amount of usable energy

In the 20th century where did the most ecologically destructive oil spill in the US

Which of the activities listed below are functions of the Lymphatic System? 1 transports lipids to the blood 2 transports lipid-soluble vitamins to the blood 3 drains excess interstitial fluid from tissue spaces and returns it to the blood 4