This video is from the Khan Academy subject of Partner content on the topic of Crash Course and it covers Ecosystem Ecology: Links in the Chain.

The video resource "Ecosystem Ecology: Links in the Chain - Crash Course Ecology #7" is included in the "Ecology" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.

Paul Andersen explains how ecosystems interact with biotic and abiotic factors. He explains and gives examples of food chains and food webs. He shows how limiting factors eventually leads to logistic growth. Real data from Yellowstone Park is used to show how populations interact.

Paul Andersen explains how changes in the signal transduction pathway can affect organisms. He begins with a brief discussion of the tetrodotoxin produced by the California Newt. He then explains how anthrax affects adenylate cyclase and thereby shuts down the signal transduction pathway.

This USGS video uses Raleigh, NC as an example of the effects of urbanization on stream ecosystems.
The resource, "Effects of Urbanization on Stream Ecosystems" included in "Lesson 1 Intro to Stormwater Management" is a part of "Unit 08 Storm Water Management Capstone" included in Energy & Sustainability ES - Course 2.

See where the pacemaker cells start the electrical wave of depolarization, and how it gets all the way to the ventricles of the heart. Rishi is a pediatric infectious disease physician and works at Khan Academy.

Paul Andersen defines the major elements of feedback loops. The receptors and effectors both sense and respond to changes in their environment. The following examples are used to illustrate the importance of feedback loops in maintaining homeostasis: speed signs, thermostats, thermoregulation, and blood glucose maintenance.

This "Embryonic Stem Cells and Somatic Cell Nuclear Transfer (extended version)" learning object is the from the Sumanas resource series. Sumanas offers a robust selection of content and services that are directed at enhancing the learning experience.

How can many stupid things combine to form smart things? How can proteins become living cells? How become lots of ants a colony? What is emergence? The video "Emergence - How Stupid Things Become Smart Together" is a resource included in the Biology topic made available from the Kurzgesagt open educational resource series.

Paul Andersen explains the major elements in the endocrine system. He explains how glands produce hormones which target cells. He differentiates between water soluble and lipid soluble hormones. He then describes the hormones and actions of ten glands: pineal, anterior pituitary, posterior pituitary, thyroid, parathyroid, pancreas, adrenal cortex, adrenal medulla, testes and ovaries.

The video resource "Endocrine System, part 1 - Glands & Hormones: Crash Course A&P #23" is included in the "Anatomy & Physiology " course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.

The video resource "Endocrine System, part 2 - Hormone Cascades: Crash Course A&P #24" is included in the "Anatomy & Physiology " course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.

Paul Andersen explains how eukaryotic cells were formed through a process of endosymbiosis. He describes how aerobic bacteria became mitochondria and cyanobacteria became chloroplasts. He mentions an example of symbiosis that occurs today and mentions the importance of Dr. Lynn Margulis in the development of this modern theory.

The resource, "Energy Literacy Teacher Resource Guide" included in "Lesson 1 Energy Definition & Types" is a part of "Unit 02 What Is Energy" included in Energy & Sustainability ES - Course 3

This tracking sheet from Energy Star will track your energy use, cost, and intensity, as well as greenhouse gas emissions. This tool also allows you to customize your energy intensity metrics to fit your strategy. The resource, "Energy Tracking Tool v. 1.2" included in "Lesson 5 Electrical Devices Load Estimation" is a part of "Unit 06 Load Estimations and Calculations" included in Energy & Sustainability ES - Course 3.

Students are introduced to genetic techniques such as DNA electrophoresis and imaging technologies used for molecular and DNA structure visualization. In the field of molecular biology and genetics, biomedical engineering plays an increasing role in the development of new medical treatments and discoveries. Engineering applications of nanotechnology such as lab-on-a-chip and deoxyribonucleic acid (DNA) microarrays are used to study the human genome and decode the complex interactions involved in genetic processes.

Under the "The Science Behind Harry Potter" theme, a succession of diverse complex scientific topics are presented to students through direct immersive interaction. Student interest is piqued by the incorporation of popular culture into the classroom via a series of interactive, hands-on Harry Potter/movie-themed lessons and activities. They learn about the basics of acid/base chemistry (invisible ink), genetics and trait prediction (parseltongue trait in families), and force and projectile motion (motion of the thrown remembrall). In each lesson and activity, students are also made aware of the engineering connections to these fields of scientific study.

This biomimetic engineering challenge introduces students to the fields of nanotechnology and biomimicry. Students explore how to modify surfaces such as wood or cotton fabric at the nanoscale. They create specialized materials with features such as waterproofing and stain resistance. The challenge starts with student teams identifying an intended user and developing scenarios for using their developed material. Students then design and create their specialized material using everyday materials. Each students test each design under specific testing constraints to determine the hydrophobicity of the material. After testing, teams iterate ways to improve their self-cleaning superhydrophobic modification technique for their design. After iterating and testing their designs, students present their final product and results to the class.

Labs in this book supplement the information gained in lecture, as well as providing some perspective and experience with hands-on applications of ideas in pest management. The labs are presented in week-by-week order, so the pre-labs and reading for week 1 are labeled “Pre-Lab 1” and “Week 1 Reading”.

Pre-Labs are assignments to be done before lab meets, and will be due at the beginning of Lab. Complete the labs using your textbook, web resources, or the reading assigned for the week.

Readings are short 1-3 page “chapters” covering background topics pertinent to the upcoming lab, particular groups of insects/arthropods, or methods used in Pest Management. This should be read before coming to Lab each week.

Lab Assignments need to be printed and brought to class so that they can be completed as a group in Lab. It is sometimes helpful to read through the assignment ahead of time to get an idea of the subject matter for the week.