Explanation:
Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... This extra carbon dioxide is lowering the ocean's pH, through a process called ocean acidification.
The rock layer which marks the end of the dinosaurs is: C. KT Boundary layer.
A rock can be defined as a solid material containing minerals, which are naturally formed through the following processes:
Basically, a rock comprises of various layers which marks the age of both living and nonliving organisms, these includes:
I. Burgess Shale layer.
II. Mesozoic Layer.
III. KT Boundary layer.
Dinosaurs refers to a taxa of carnivorous or herbivorous archosaurian reptiles that are often very large and belongs to the Mesozoic era.
Basically, the Mesozoic Layer is a rock layer which marks the period when dinosaurs were still roaming the earth some million years ago.
However, dinosaurs went into extinction at the KT Boundary layer and as such it is a rock layer which marks the end of the dinosaurs.
Read more: brainly.com/question/22432773
Mos commonly 2 elements combine.
examples: H2, O2
Answer:
trigonal pyramidal
Explanation:
A molecule has the formula AB3 have a dipole moment and the central atom is in a different plane from the surrounding three atoms. Its molecular shape is trigonal pyramidal.