Over a million students use our free study notes to help them with their homework
Populations naturally vary. (Think of how people in your class vary in height, weight and other features)This variation is brought about by inheritance of g...
Different parts of the body have very different functions, so it is important that the cells in these different parts have adapted in order to help the functioning to be more efficient.
F...
1) They put on fat which is a good insulator and allows the animal to retain its heat.
2) The animal in putting on weight will become larger and have a smaller surface area to volume rati...
When moving across a selectively permeable membrane, ions, polar and large molecules cannot dissolve easily in the lipid membrabe. Instead, transport must occor by way of protiens that ac...
Energy is transferred throughout the food chain as animals at lower trophic levels are consumed by those at higher trophic levels. In every living organism, energy is taken in as food. But when one org...
←
386
387
388
389
390
→
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
