Over a million students use our free study notes to help them with their homework
Reflexes are involuntary and instantaneous actions that occur in response to a stimulus, for example our pupils contracting in response to a bright light. The receptor detects this stimulus and sends an e...
1.Capture/collect sample, mark and release 2.Method of marking does not harm/distinguish lizard 3.Leave sufficient time for lizards to (randomly) distribute (on island) before coll...
The blood enters the heart from the superior and inferior vena cava. It then enters the right atrium. When the atria fill with blood, it's known as atrial systole as they are relaxed. Once the atria have ...
The mammalian respiratory system is adapted for efficient gas exchange by increasing the rate of diffusion through targeted manipulations of Fick's law. These manipulations are centred around maximising s...
Gas exchange is important for fish as they need oxygen for respiration. Considering Fick’s law, in order to maximise the rate of gas exchange, fish have many gill filaments covered in lamellae, maximising...
←
13
14
15
16
17
→
Internet Safety
Payment Security
Cyber
Essentials
