1. The correct answer is option B, single-celled eukaryotes that sometimes grew in colonies
Reason – Single celled species are originally the main ancestors of all animals because after evolution and classification, these species evolved into multicellular organisms which later on further diversified into different generas, species and classes. Living in colonies allowed these single celled species to produce sexually
2. The correct answer is option B, representatives of most animal phyla
Reason – The cambarian explosion is considered as the most evolutionary phase in the Earth’s history. All major animal body plans including Ctenophora, Poriferas, Cindaria, Chordata, Hemichordata, Echinodermata, Nematoda, Artropoda, Platyhelminthes, Mollusca, Annelida, Brachiopoda etc. occurred during this period.
Answer:
to get the breast milk flowing
Explanation:
Some women have difficulty to let-down their milk. In such cases, oxytocin nasal spray is prescribed to help bring about let-down of breast milk
Answer:
An enzyme is a protein. Any change in the primary structure of a protein (the primary structure is the aminoacid sequence) can induce a change in the secondary, as well as tertiary structure (tridimensional conformation). This change in the shape of the enzyme can affect its activity, since it can change the active site consequently to this conformational change.
Explanation:
1.Main clause:
A.The Mason-Dixon Line
B.The Mason-Dixon Line, which is perhaps the most famous border ever established by surveying methods
C.The Mason-Dixon Line has been designated a National Historic Civil Engineering Landmark
D.the most famous border ever established by surveying methods has been designated a National Historic Civil Engineering Landmark
E.has been designated a National Historic Civil Engineering Landmark
2.Subordinate clause:
A.which is perhaps the most famous border ever established by surveying methods has been designated a National Historic Civil Engineering Landmark
B.has been designated a National Historic Civil Engineering Landmark
C.which is perhaps the most famous border ever established by surveying methods
3.Subordinate clause functions as a(n):
A.adjective
B.adverb
C.noun
1. The correct answer is C. The Mason- Dixon Line has been designed as a National Historic Civil Engineering Landmark.
Main clause can also be referred to as independent clause. There is a verb and a subject in it and they express a thought which is complete.
2. Correct answer is C. Which is perhaps the most famous border which is ever established by surveying methods.
Subordinate clause can also be known as dependent clause. It starts with relative pronoun and it has both verb and subject. A complete sentence can not be formed in this combination.
3. The correct answer is adjective.
Subordinate clause functions the same way as adjective.