Over a million students use our free study notes to help them with their homework
The lungs have million of alveoli which increases the surface area, therefore increasing the rate of diffusion of oxygen into the lungs. The alveoli are very thin...
During inspiration, the intercostal muscles contract, moving the sternum up and out. This increases the thoracic volume, hence decreasing the pressure. The pressure gradient set up causes air inflow from ...
Prey population size increases when there are enough resources available for food. When prey populations increase, the predator population size also increases, as this means there is more food available f...
Intro: Look at caveats in the question:Not all cells are compartmentalised - e.g. prokaryotic cellsThis therefore tells us that compartmentalisation is likely an adaption to a set of biological niches.(If...
The cardiac cycle is split into 2 main phases: systole where the heart contracts and ejects blood out from the heart and diastole where the heart relaxes and fills with b...
←
265
266
267
268
269
→
Internet Safety
Payment Security
Cyber
Essentials
