"Establishes the typical fauna and the adaptations of the animals to the environmental conditions by studying the respective images from the cahul".
What i infe from the text is that, it is talking about the biological term called adaptation. Put simply adaptation is a study of how living things in their quest for survival, change to the state of their immediate environment by exhibiting certain features.
c. A dam can significantly reduce or shut off the supply of sediment to a delta.
Explanation:
The rivers that drain into the ocean have deltas and they form the mouth of the river and the soil rich land is a called as the delta. The dam can significantly stop or shut the supply of the sediments to the deltas.