false
young
False. Cyanobacteria changed earth's atmosphere by removing carbon dioxide and releasing oxygen.
A mature river erodes its channel wider rather than deeper. The gradient of a mature river is less steep than young rivers, and the water flows more smoothly. Examples of mature rivers are the Thames, Mississippi, and Ohio rivers.
A puppy. A kitten. A calf. A colt.
because this are the young mountains that recently formed in the earth.
No.
No. Older rivers which meander and create oxbows are the norm. Young rivers tend to flow in straighter lines.
a young river A+
false
young
A young
a young river A+
false
If the river is young it is steep in places and doesn't meander (curve). A mature river isn't so steep and it is starting to form meanders; but be careful because old rivers are completely flat and do have meanders.
True
An old river is a river with a low gradient and low erosive energy. Old rivers are characterized by flood plains.
Yes, the astrological Virgo is characterized by a young female.