The square denotes male. One parent is recessive, so X must have at least one recessive allele. B is the right answer.
a herbivore? feeding on plants
Stromatolite fossils are the oldest known fossils<span>, that formed 3.5 billion years ago when the environments of Earth were too hostile to support life as we know it today. They </span><span>are layered mounds, columns, and sheet-like sedimentary rocks</span><span>
Stromatolite fossils indicate that </span>life must have arisen quite a bit earlier, perhaps 3.9 billion years ago.
Condensation occurs in the atmosphere, which is D. Think about water vapor. Since water vapor is part of the air, so that means that condensation occurs in the atmosphere.
Vocab:
Condensation - Is the change of the water vapor into the water, or overall the change of water from its gaseous form to liquid form.
Hope this helped!
