Which u.s. government designation provides the most protection from human damage to a
public area - Answers wilderness act
which of the following is true - Answers species on earth today are only a fraction of all species
that have ever lived
proteins - Answers composed of amino acids, function as enzymes and hormones, play a key
role in immune system
nucleic acids - Answers composed of nucleotides and function to transmit hereditary info
carbohydrates - Answers source of energy (starch), used to build cell walls (cellulose),
composed of simple sugars or macromolecules
Your friend plants Roundup Ready seeds in her garden and several months later notices that her
garden is overrun with weeds. She calls the seed company to complain. How should the
customer service agent respond? - Answers The customer service agent should point out that
the Roundup Ready plants would survive being sprayed with Roundup. Your friend never used
Roundup on her garden, so the weeds overran her garden.
Which of the following horizons of soil would most likely contain the most minerals? - Answers
the B horizon
Example of positive feedback loop - Answers a snowball rolling down a hill accumulates snow
and becomes larger, which increases its speed, causing it to increase size and speed even more
example of negative feedback loop - Answers a dog pants as it lies in the hit summer sun,
releasing excess body heat to the environment and lowering its body temperature to its stable
state
causes of deforestation - Answers growing demand for wood products, expansion of farming,
subsistence grazing
consequences of deforestation - Answers more surface runoff, soil erosion, decreased carbon
sequestration
solutions to deforestation - Answers more tree planting, wood substitution, recycling of paper
problems
the scientific method - Answers cannot prove a hypothesis to be true
during the past half century, global food production has ______ world population growth -
Answers grown at a faster rate than
what force joins two water mollecules - Answers hydrogen bond