Waking Mars Hints for iPhone/iPad
Don't run out of seeds, make sure you plant your last one in fertile ground to make a new plant so you can then harvest a fresh supply of seeds from it.
The only way that you can restore your health is by standing next to hydrated Halid Zoa plants so if you are nearly dead you need to find one.
Look at the blank entries in your encyclopaedia whenever you come across a new creature so you can see what it is you should be trying to find out.
Make sure you plant your last seed in fertile ground when you are about to run out of them so it makes a new plant that you can harvest a fresh supply of seeds.