If pore space comprises 60% of the total volume of a soil and half of this pore space is filled with water, how much of the total volume of the soil will be filled with air?

a. 30%

b. 40%

c. 50%

d. 60%

Non-native (exotic) species can become _species when they out compete the native species. Keystone Invasive Exotic Extinct Umbrella

You do not need to see proof of insurance coverage for a taxpayer if you feel that this information is not unusual or questionable. a. True b. False

In the mouth, what layer of epidermis is missing when compared to regular skin?

Which event is the most common at a transform plate boundary? A. frequent earthquakes B. formation of a mountain chain C. a mid-ocean ridge D. a hot spot volcano

What are three solution to the environmental of mesopotamia

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

Under which circumstances must facilitated diffusion be used instead of simple diffusion?