Both, the grasslands and the forests exhibit high resilience to lot of exposure to sunlight. They are both found at places where there is lot of sunlight throughout the year, so they had to adapt to be able to witstand such intense sunlight. The grasslands also exhibit high resilience to droughts, as they can be found at regions where there's prolonged periods of drought. The rainforests, on the other hand, have developed high resilience to water, as they occupy regions where there's large amounts of water, more than the plants actually need, so it is crucial for them to be able to take in a lot of water, but also to be able to stop the intake of it.