Food webs - Study guides, Revision notes & Summaries

What is an ecosystem? -Answer- A community of living organisms and their environment. What is ecosystem ecology? -Answer- The study of how energy and nutrients flow through ecosystems. What is disturbance? -Answer- An event that disrupts an ecosystem. What is an ecosystem engineer? -Answer- A species that modifies its environment. What is an autotroph? -Answer- An organism that produces its own food. What is a heterotroph? -Answer- An organism that obtains food by consuming other organisms...

Well-structured NST1501 Assignment 3 (ANSWERS) 2024 - DISTINCTION GUARANTEED. (DETAILED ANSWERS - DISTINCTION GUARANTEED!)..... QUESTION 1 1.1 Define the following terms: 1.1.1 Solvent 1.1.2 Matter (4) 1.2 Give an example of a heterogenous mixture. (2) 1.3 Identify 2 different ways of separating homogenous mixtures (4) 1.4 State the three different states of matter. (3) 1.5 Identify the process: 1.5.1 Change of state from liquid to solid 1.5.2 Change of state from gas to liquid 1.5...

BIOS 242 Exam 2 (2023/2024) Rated A+ Organic Nutrient An organism that contains carbon and hydrogen Inorganic Nutrient An organism that does not contan carbon and hydrogen Phototroph An organism that gains energy from light through photosynthesis Heterotroph An organism that must obtain carbon in an organic form - they are dependent on other life forms Chemotroph An organism that gains energy from chemical compounds - this means they eat things. Harvesting energy from the things they eat. A...

What adaptation do mammals have for hearing? - Very large ears - Foxes and Wolves What adaptations do Owls have for hearing? (5 things) - Owls use their face - Called Facial Disks Hidden Ears - inside skull Short Bills - down curved bills to prevent interference with sigh and hearing Asymmetrical Ear Canals - gives horizontal separation which allows owl to find prey more precisely - Called Auditory Crosshairs!! Low wing loading - large wings with small body - wing feathers...

Contemporary Issues in Biology Final ~ TCU, Sawey Exam Questions and Answers how long have homo-sapiens been on earth - Answer- thought to be 200,000 years, starting in ethiopia mutation - Answer- change in nucleotide in the base of DNA; not all harmful; passed down in generations of that descent when did humans establish themselves worldwide - Answer- 12,000 years ago; before humans and agriculture coincided how did humans live before agriculture - Answer- used tools (needles, spears, c...

? Rule the world - Phytoplankton! - Fix lots of CO2, produce 90% of the Earth's O2 and help create clouds - Limited by: P, N, silica (diatoms), iron, trace elements - Could harness phytoplankton to control greenhouse gases (consume CO2 when fixing C - phytoplankton is iron limited; experiment: seed ocean with iron to create phytoplankton blooms to sequester (take out of the atmosphere and bring it to depths) carbon - SOIREE - Southern Ocean Iron Release Experiment - Large phytoplankton bl...

Organic Nutrient - Answer-An organism that contains carbon and hydrogen Inorganic Nutrient - Answer-An organism that does not contan carbon and hydrogen Phototroph - Answer-An organism that gains energy from light through photosynthesis Heterotroph - Answer-An organism that must obtain carbon in an organic form - they are dependent on other life forms Chemotroph - Answer-An organism that gains energy from chemical compounds - this means they eat things. Harvesting energy from the things th...

Aptive Practice Test 1 Questions and Answers Graded A+ In what location in the interior of a residence would flea larvae most likely be found? In the carpet Which of the following weather conditions is highly conductive to flea development? Warm and Humid Which of the following residual insecticide application methods provides the quickest knockdown for the control of fleas in the lawn area? Power Spray Preparing a house for chemical treatment of which of the following pests in...

Contemporary Issues in Biology Final ~ TCU, Sawey Exam Questions and Answers how long have homo-sapiens been on earth - Answer- thought to be 200,000 years, starting in ethiopia mutation - Answer- change in nucleotide in the base of DNA; not all harmful; passed down in generations of that descent when did humans establish themselves worldwide - Answer- 12,000 years ago; before humans and agriculture coincided how did humans live before agriculture - Answer- used tools (needles, spears, c...

Contemporary Issues In Biology Exam 4 (taryn_weltzin) Exam Questions and Answers Natural Selection - Answer- environment determines which organisms will survive and reproduce Fruit Flies and Humans - Answer- 15,000 similar genes - cellular/molecular levels our genetic code is indistinguishable Hunter-Gatherers (Homosapiens) - Answer- lacked agricultural technology - lived in small groups instead of large populations North American Food Resources - Answer- everything except for seafood is...