Answer:
Layer D
Explanation:
Layer D would be the oldest form of undisturbed rock. This would mean that since it is the oldest, it will be <em>least</em> similar to the present day form of that organism.
Answer:
The circulatory system or vascular system is an organ system that helps in the transport of the blood from and to the heart. The blood transport also takes oxygen, nutrients, hormones, and other components from the heart to the various part of the brain with the help of the arteries and carry waste such as carbon dioxide to the heart in veins.
The oxygenated blood enters in the left atrium and moves to the left ventricle to the aorta and starts its journey to the body whereas deoxygenated blood enters in the right upper chamber or right atrium of the heart and pump to the right lower chamber and to the lungs to carry the oxygen again. This process is a continuous process.
Answer and Explanation:
Yes, a single molecule can work through all three effector route. Cells commonly lead independent lives, and they might influence and communicate with other cells for sexual mating. For example, yeast cells communicate with one another for mating. On the other hand, animal cells communicate by different kinds of signal molecules. These molecules include amino acids, nucleotides, proteins, small peptides, retinoid, and derivatives of fatty acids and also includes dissolved gases such as carbon monoxide and nitric oxide. In the extracellular spaces, most signal molecules are secreted by the signaling cells. Some signal molecules are exposed to the extracellular spaces, while others are released by diffusion. Target cells respond by a specific protein called receptors. Receptors bind the signal molecules and start response in the target cell. On the surface of target cells, receptors are transmembrane proteins. When receptors bind extracellular signal molecules, they stimulated and produced a flow of intracellular signals that initiate the cells' behavior.
The right answer is Hashish (<em>Cannabis sativa</em>)
Cannabis is a plant that originates from hemp <em>Cannabis sativa</em>. Modified by many human actions, this plant, after flowering, produces a white substance called tetrahydrocannabinol (THC: delta-9-tetrahydrocannabinol chemical psychotropic).
It is responsible for the psychoactive effects of the plant and therefore gives the status of "narcotic" cannabis. The concentration of THC is very variable depending on how to grow it and where the product comes from.
Vertebrates are part of the phlylum chordata.