Over a million students use our free study notes to help them with their homework
Evolution by natural selection occurs through mutations within organisms of the same species that makes every organism slightly different. Those organisms with the favourable mutation for the environment ...
Alveoli have a large surface area, allowing more oxygen and carbon dioxide molecules to diffuse across at one time.
glucose + oxygen = carbon dioxide + water
Mineral ions are transported into root cells by INDIRECT ACTIVE TRANSPORT/UPTAKE. First of all, hydrogen ions are pumped out of the root cells' vacuoles into the soil. This creates a conc...
Diffusion is the spreading out of the particles of any substance in solution, or particles of a gas, resulting in a net movement from an area of higher concentration to an area of lower concentrationDJAnswered by Delwin J. • Biology tutor2255 Views
←
49
50
51
52
53
→
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