Answer:
Urochordata
Explanation:
Chordata is an animal phylum characterized by four features at some point in their lifetime. These four features are:
- notochord
- pharyngeal slits
- dorsal hollow nerve cord
- post-anall tail
Chordata is further divided into urochordata, cephalochordata and vertebrates.
Urochordates display all the four features of chordates in their larval form but their adult form has none of them except pharyngeal slits. They also change from their free swimming larval form to sessile adult form which means that they attach to a surface unlike the larval form. They also display filter feeding i.e. their food is filtered via the pharyngeal slits. Since all these characteristics are being displayed by the newly discovered species, it belongs to urochordata group.
Answer: D
Almost completely sure it is D
Explanation:
Since the rats are the main source of food, then there will be a decrease in all the species the base off of that one source of food.
I mean, we sleep because we need to do restorative processes like repairing tissue, oftentimes these processes only occur during sleep.
New, more adaptable species flourish, replacing the extinct species.
The selection pressures before the extinction tend to favor a certain type of organism and the sudden shift in conditions help others move up the food chain.
