2025/2026 GRADED A+
Pablo and Johanna have to do a yearlong study for their biology course. After some
discussion, they decide to try comparing their dogs and the diet that they feed them.
Each has a dog from the pound, and both dogs are less than one year old. Pablo feeds
his shepherd-mix dog a special diet of wet and dry foods from the local vet, while
Johanna uses generic dry kibble from the supermarket for her bulldog. They want to see
which diet results in bigger, healthier, faster-growing dogs. According to the information
given, one dependent variable in this study will be ________. - how much the dogs
grow
The process by which several researchers review another researcher's manuscript prior
to publication to ensure research quality is referred to as ________. - peer review
Who is credited for articulating the conservation ethic and for founding the U.S. Forest
Service? - Gifford Pinchot
____________ is a basic understanding of Earth's physical and living systems and how
we interact with them.
Environmental ethicsAn ecological footprintSustainabilityEnvironmental
literacyEnvironmental economics - Environmental literacy
A __________ occurred when scientists determined that the earth is round rather than
flat. - paradigm shift
Which of the following statements best describes energy? - Energy is the capacity to
change the position, physical composition, or temperature of matter.
(A) Nitrifying bacteria convert _____ to _____.
(B) _____ removes nitrogen from the atmosphere.
(C) Assimilation is indicated by the letter(s) _____.
(D) Part complete
Nitrogen-fixing bacteria is(are) indicated by the letter(s) _____.
(E) Nitrification is indicated by the letter(s) _____.
(F) Denitrifying bacteria convert _____ to _____.
(G) Which one of these is a nitrate?
(H) Which one of these is a nitrite? - (A) ammonium ... nitrites
,(B) Nitrogen fixation
(C) A
(D) D and E
(E) B
(F) nitrates ... nitrogen gas
(G) NO3 -
(H) NO2 -
Some organisms, such as plants, algae, and cyanobacteria, produce their own food by
absorbing the sun's radiation. These organisms are referred to as ________. -
autotrophs or producers
Atoms of iron (Fe) and sulfur (S) form iron sulfide (FeS) when the iron atom donates
electrons to the sulfur atom. The type of bond formed would be a(n) __________. - ionic
bond
Although 78% of Earth's atmosphere is nitrogen, nitrogen is limited in most ecosystems
because __________. - the natural conversion of atmospheric nitrogen occurs via only
lightning and nitrogen-fixing bacteria
Nitrogen from fertilizers and manure on farm fields that runs off into waterways that feed
the Bay
Fertilizer runoff from urban and suburban lawns that is channeled to waterways through
stormwater systems
Wastewater from septic systems and wastewater treatment plants that has been treated
to remove biodegradable wastes and pathogenic microorganisms, but not to remove
plant nutrients
The deposition of nitrogen-based compounds put into the atmosphere by automobile
engines and power plants
Naturally-occurring runoff of nutrients from soils into waterways
Based on the pie chart, which of the following approaches would likely yield the biggest
benefits for reducing nitrogen inputs into the Chesapeake Bay? - Local governments
work with farmers to implement strategies to minimize nitrogen runoff from farm fields
Assume you operate a farm in the Chesapeake Bay watershed and wish to do all you
can to minimize nutrient runoff from your farm reaching the waters of the Bay. You have
already planted grass buffers along the creek that runs through your fields, and you
plant cover crops on your land after harvest instead of leaving the soil bare, which
facilitates runoff. Your land isn't amenable to planting trees along the creek, there are no
, areas in which to construct a wetland, and you do not yet have the money to purchase
the specialized equipment that enables conservation tillage (planting crops with minimal
tilling, or plowing, of the soil).
What approach would be best for you to consider, as a farmer, to further reduce nutrient
runoff from your fields into the Bay? - Enhanced nutrient management programs (NMP)
For what it costs to remove 1 pound of nitrogen from Bay waters by using enhanced
nutrient management programs (NMP), approximately how many pounds of nitrogen
could be kept out of waterways by restoring the wetland that once existed on the site? -
15
What name is given to the process(es) seen in this animation? - dehydration synthesis
The murkiness (turbidity) of the water was analyzed and found to have several major
sources, including ________. - erosion from deforested hillsides, sediments produced
from poorly treated wastewater discharge, and sediments produced from the increased
plant biomass of the lake
Which of the following has the lowest concentration of H+ ions? - ammonia
(A). Which of these is exhibiting kinetic energy?
(B) "Conservation of energy" refers to the fact that _____.
(C) Chemical energy is a form of _____ energy
(D) In your body, what process converts the chemical energy found in glucose into the
chemical energy found in ATP?
(E) Which of these are by-products of cellular respiration? - (A) a space station orbiting
Earth
(B) energy cannot be created or destroyed but can be converted from one form to
another
(C) potential
(D) cellular respiration
(E) heat, carbon dioxide, and water
When you burn a log in your fireplace, you are converting ________. - chemical energy
to thermal (heat) energy
During photosynthesis, ________. - there is net consumption of water and carbon
dioxide