<u><em>Ecology</em></u><em> is the study of interactions among organisms and their environment including its living and nonliving parts.</em>
Answer: A. Ecology
Explanation:
Ecology is the investigation of how living beings associate with each other and with their physical condition. The conveyance and bounty of living beings on Earth is moulded by both biotic, living-life form related, and abiotic, nonliving or physical, factors.
Ecology is learned at numerous levels, including creature, populace, network, biological system, and biosphere. Water accessibility is a case of an abiotic, or nonliving, factor that can influence dispersion of creatures.
Accessibility of supplements given by different life forms is a case of a biotic, living-creature related, factor that can impact appropriation.
Answer:
There are more thick filaments than thin filaments. (Ans. D)
Explanation:
Smooth muscle doesn't contain the calcium binding protein troponin. In smooth muscle, contraction is initiated by a calcium regulated phosphorylation of myosin, rather than a calcium activated troponin system.
The intermediate filaments are connected to each other with the help of dense bodies, which are attached to adherens junction in the cell membrane of the smooth muscle cells which are known as sarcolemma.
Smooth muscle cell lack sarcomeres because their filaments occur as a spiral and actin, myosin filaments are not regularly arrayed along the length of the cell.
In smooth muscle thin filaments occurs more than thick filaments.
So, the answer is D.
Our earth is in constant nonstop motion
<span>This is true. There is debate as to from what period have the currently examined sponges come, but the common consensus is that they go all the way to the Precambrian period, some 600 million years ago. They gave way to many discoveries about evolution of organisms because it was the first organism to have some genes that are found in modern day organisms.</span>
