Which of the these is NOT considered to be an organic substance?

A) carbohydrates

B) lipids

C) metals

D) proteins

Which of the following is the best example of an ecosystem? A. a nest of mockingbirds, some bullfrogs, a pond, and a sandy shore B. bees and wasps around a group of purple cornflowers C. a school of sunfish

The liquid mercury in a thermometer expands as it is heated. This is a A. change of form. B. change of state. C. chemical change. D. physical change.

Which quadrilaterals always have consecutive angles that are supplementary?

Which of the following is not a macronutrient? A) Carbohydrates B) Protein C) Vitamin C D) Fat

Which of the following occurs after tsunami and forest fire? a) primary succession b) quaternary succession c) secondary succession d) tertiary succession

Adrenergic synapses release the neurotransmitter in the

List three organisms transported by ocean currents.

Question 1 Bernoulli's principle states that fluid velocity decreases when flow is restricted. 1) True 2) False

Whats the order of horse

What does the Eurasian Boar threaten?