Over a million students use our free study notes to help them with their homework
Before speciation occurs we have a population of individuals of the same species that can freely and successfuly mate with each other. In allopatric speciation a geographical barrier forms (a mountain ran...
The human heart system is described as double circulatory becasue is has two seperate circuits. The first carries blood between the heart and the lungs and is known as the pulmonary circuit and the second...
The potential or information travels between a pre-synaptic and a post-synaptic neuron. As a reminder, for information, we intend the flow of Na+ and K+ ions between two locations. When t...
When an action potential from a pre-synaptic neuron approaches a synapse, the change in membrane potential causes voltage-gated calcium ion channels to open across the pre-synaptic bulb. Due to the high d...
The overuse and misuse of antibiotics promotes antibiotic resistance. A common misconception is that antibiotics can be used to treat colds and the flu, which are actually caused by viruses. Therefore, by...
←
257
258
259
260
261
→
Internet Safety
Payment Security
Cyber
Essentials
Comprehensive K-12 personalized learning
Immersive learning for 25 languages
Trusted tutors for 300 subjects
35,000 worksheets, games, and lesson plans
Adaptive learning for English vocabulary
Fast and accurate language certification
Essential reference for synonyms and antonyms
Comprehensive resource for word definitions and usage
Spanish-English dictionary, translator, and learning resources
French-English dictionary, translator, and learning
Diccionario ingles-espanol, traductor y sitio de apremdizaje
Fun educational games for kids
