🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →
Log in
Biology
2
answers
0
watching
678
views
5 Feb 2018

Explain how human activities can cause an imbalance

in biogeochemical cycling and lead to problems such as

cultural eutrophication and fish kills

Watch
2
answers
0
watching
678
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
Collen Von
Collen VonLv2
6 Feb 2018
Already have an account? Log in
Share

Related textbook solutions

Molecular Cell Biology
8 Edition,
Lodish
ISBN: 9781464183393
Biology: Science for Life with Physiology
6 Edition,
Belk
ISBN: 9780134555430
Concepts of Biology
OER Edition,
Openstax
ISBN: 9781938168116
Biology
2nd Edition, 2013
Openstax
ISBN: 9781947172517
Essentials of Biology
5 Edition,
Mader
ISBN: 9781259660269

Related questions

You develop a series of antibiotics that inhibit the function of 70S ribosomes. Antibiotic A kills only bacteria. Antibiotic B kills bacter, archaebacteria and the protozoa that causes Malaria. Antibiotic C kills bacteria and archaebacteria.

A. Please explain these results. You explanation should include include all three antibiotics.

B. Which of these drug would you expect to achieve selective toxicity in humans and why?

C. Which of there drugs would have the lowest therapeutic index? Explain your answer.

There are many diseases such as diabetes and heart disease that cause mild peripheral neuropathy(numbness in the extremities). Please explain to your roommate why this causes people to be susceptible to micribial infections.

Rate for answering both questions compeletly!

64. Minerals in rocks are considered what typeof component of a chemical cycle? (Points : 1.25)
reservoir
exchange pool
biotic community
biotic
none of these
Question 65.65. Are humans capable ofupsetting global biogeochemical cycles with their activities?(Points : 1.25)
YES
NO
Question 66.66. There is more nitrogen gas inthe atmosphere than there is oxygen. (Points : 1.25)
TRUE
FALSE
Question 67.67. Which of the following is notan effect of global warming? (Points : 1.25)
rise in sea level
expansion of forests inthe temperate zones
melting of glaciers
wetter coastalregions
flooding of coastalagricultural land
Question 68.68. Cultural eutrophication can becaused by (Points : 1.25)
respiration andtranspiration.
mercury from industrialsources.
bacteria and viruses fromsewage and barnyard waste.
detergents, fertilizers,and sewage treatment plants.
biologicalmagnification.
Question 69.69. How is the nitrogen cycle likethe carbon cycle? (Points : 1.25)
Both are gaseouscycles.
Both requirephotosynthesis to utilize the chemical.
Both are lost to theatmosphere during cellular respiration.
Both are stored in fossilfuels.
Neither has a reservoirin nature.
Question 70.70. Decomposers perform a valuableservice because they recycle nutrients. (Points : 1.25)
TRUE
FALSE
Question 71.71. In MDCs, many people do noteat enough protein. (Points : 1.25)
TRUE
FALSE
Question 72.72. What do hydropower and windpower have in common? (Points : 1.25)
Both require the buildingof dams.
Both lead to an increasein greenhouse gas emissions.
Both are renewable energysources.
Both result in thedepletion of fossil fuels.
Both require the use ofphotovoltaic cells.
Question 73.73. Define an ecologicalfootprint. (Points : 1.25)
the total amount ofresources used by an individual to meet their needs
the amount of food aperson needs to eat
the amount of water aperson needs to meet their needs
the amount of land aperson needs to provide a place to live
the amount of energy aperson needs to meet their needs
Question 74.74. Which of the following is nota sustainability practice designed to conserve water? (Points :1.25)
use sediment traps forstorm drains
use low-flow or trickleirrigation
build retentionponds
use nonporous surfacesfor parking lots
use green roofs

1. Studies over many years and by many different researchers have shown that only 10% of the energy captured by photosynthesis is transferred to the next trophic level, primary consumers. Similarly, the transfer of energy between any trophic level and the next has been shown to be 10% (Infographic 22.4). The biogeochemical cycles that continually renew supplies of clean water, oxygen, essential nutrients (nitrogen and phosphorus), and carbon also are powered by the sun’s energy (Infographic 23.9). The amount of energy delivered to the Earth remains nearly the same from year to year and is called the solar constant. Explain how energy flow and the rates of the biogeochemical cycles relate to the carrying capacity of an ecosystem. [45]

2. Prepare a schematic of the hydrologic cycle that shows the major sinks, flows, drivers and processes in the cycle. Indicate the relative amounts of freshwater and saltwater and briefly explain why all the Earth’s water has not become salty. [40]

3. If the Earth’s water supply is finite, how can global warming cause sea levels to rise? Hint: There are several mechanisms but don’t fall into a common trap. Do this experiment! Put ice in a glass and fill the glass till it is ready to overflow. Set the glass on a table and let the ice melt. What did you observe? [15]

Related Documents

BIO120H1
Final Exam
Study Guide
BIO120H1 Final: Study notes for spring semester labs
redtermite204
BIO220H1
Final Exam
Study Guide
BIO220H1 Study Guide - Genetic Variation, Penicillin, Model Organism
blushcattle669

Weekly leaderboard

Home
Homework Help 3,900,000
Biology 460,000
Start filling in the gaps now
Log in