Answer:
A) ? I would assume this because the plasmid lacks the fragment.
Answer:
Aortic arches
Explanation:
Earthworms are grouped in the phylum Annelids and there body is segmented which resemble many little rings attached together. Similarly, earthworms possess circulatory system and circulate there blood through vessels. Thus, there are three (3) vessels that circulate bloods in earthworm which includes: ventral blood vessels, aortic arches and dorsal blood vessels. However, aortic arches functions like human heart thereby having the responsibility to circulate or pump blood into the ventral and dorsal blood vessels. Furthermore, the aortic arches are known to be the main portion of the artery that bends between ascending and descending aorta.
Answer:
65 million years ago
Explanation:
At the end of the Cretaceous Period. Dinosaurs became extinct at the boundary between the Cretaceous and Paleogene eras, about 66 million years ago, at a time when there was worldwide environmental change resulting from the impact of a large celestial object with the Earth and/or from vast volcanic eruptions.
Explanation:
Seismic waves are elastic waves that are able to propagate within the subsurface.
The travel - time to depth expressed in form of velocity is used to determine the composition, thickness and density of the interior of the earth.
- Different earth materials shows different behavior in response of seismic waves.
- By checking the attributes of the waves as they go through the subsurface, we can predict some of the properties of the underlying beds.