Pick all the characteristics below that describe compounds

two or more elements

chemically combined elements

one type of atom

cannot be separated into a simpler form

definite proportions

Which air pressure system is generally associated with cold dry air?

What is the total number of atp molecules formed during cellular respiration?

Which is not a class of rock? igneous sedimentary disturbed none of the above

Why would be expect there to be fewer foxes than caterpillars in this ecosystem?

All the interconnected feeding relationships in an ecosystem make up a food a interactions b chain c network d web

Which of the following statements describes a proton of an atom? A has a negative charge and is located in the nucleus. B has no charge and is located in the nucleus C has a positive charge and is located in outer energy levels.

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