Ecosystem services are real services, and they are discussed in terms of their monetary value, just like any other service that people need and purchase. Which of the following
most accurately describes the monetary value of the ecosystem services now derived
from Earth's ecosystems?
O A. Moderate: The ecosystem services provided for a community would be
affordable only to communities of people making moderate wages.
O
B. High: The ecosystem services provided for a community would be
affordable only to communities of high wage earners.
C. Very high: The ecosystem services provided to Earth's humans at this time
are worth more than the gross national products of all of the world's
economies combined.
XO D. Low: The ecosystem services provided for a community of people would be
easily afforded by even the poorest communities on Earth.

Every compound can be represented by a chemical formula. a chemical formula is the set of symbols showing the elements that make up a compound and their proportions. water’s chemical formula is h 2 2 o. that means a molecule of water contains two atoms of hydrogen and one atom of oxygen chemically bonded. a molecule is a group of two or more atoms bonded together. molecules can range in size from two to thousands of atoms. a molecule of a compound is the smallest unit of that compound. every molecule of water has all the physical and chemical properties of water. that’s because every molecule of water is made of the same elements in the same proportions: two hydrogen atoms and one oxygen! which of the following is a true statement? a every molecule of the same compound will have different properties. b every molecule of a compound has the same proportion of elements. c molecules can be physically separated into smaller units of a compound. d molecules cannot be represented by chemical formulae.

Dna replication or repair occurs in a cell in all of thw following situations except when

In the presence of oxygen, glycolysis is followed a. the krebs cycle b. lactic acid fermentation c. alcoholic fermentation d. photosynthesis