The serous fluid within the pericardial cavity works to lubricate the membranes of the serous pericardium.
<h3>The pericardial cavity</h3>
The pericardial cavity is a space that is enclosed by the two layers of serous pericardium around the heart.
The pericardium is a thin, two-layered, fluid-filled sac that covers the outer surface of the heart. it is divided into 2 namely:
The serous fluid which is also called pericardial fluid helps to decrease friction between the pericardial layers. This is because, they lubricate the membranes of the serous pericardium.
Learn more about the heart here:
brainly.com/question/25876830
If the dna triplets is atg-cgt, the trna anticodons are Uac-gca.
<h3>Are codons triplets of tRNA?</h3>
The triplet of bases that is complementary to a codon is called an anti-codon the triplet in the mRNA is called the codon and the triplet in the tRNA is called the anti-codon.
Thus, option "D" is correct.
To learn more about dna click here:
brainly.com/question/264225
#SPJ4
Dating of the fossil has led to the discovery
of species that existed in the past but
became extinct. The fossils indicate that
the earliest species were different phenotypically
and genetically from today's species
hence supporting the theory of evolution.
The dating of fossils
does not support the gradual modification of organisms into new species as explicated in the theory of evolution and
speciation by Darwin. The numerous
discovered fossils exhibit a nonconstancy
of species without phyletic gradualism.
On the one hand, relative dating compares two or more
fossils and compares their ages relative to one another. Biostratigraphy and stratigraphy
techniques are used relative dating. On the other hand, absolute dating uses radiometric dating and carbon dating to ascertain the real age of a
fossil. Example of relative dating is comparing the sediment layers of rocks to determine which is older. An example of absolute dating is the use of half-life of 14C to determine the age of a
rock.
Punctuated equilibrium is a counter theory to Darwin's speciation theory. It explicates that species remain constant
over a long period of time before a particular
period when there emerges numerous variants, some of which survive and some
of which become extinct. This is as opposed
to the smooth gradual modification of
species by Darwin.