The first piece of evidence that needed to be found to support the endosymbiotic hypothesis was whether or not mitochondria and chloroplasts have their own DNA and if this DNA is similar to bacterial DNA. This was later proven to be true for DNA, RNA, ribosomes, chlorophyll (for chloroplasts), and protein synthesis.
Mosts animal cell does not have nucles
Answer:
d. wave shock
Explanation:
An adaptation can be defined as a phenotypic trait that makes an organism and/or species better suited to its environment, thereby this organism/species will have more chances to survive and reproduce in such conditions. Rock-dwelling aquatic animals have different ecological, morphological and behavioral adaptations to survive in this type of environment. In this regard, it is well-known that these organisms show dorsally flattened bodies, since it is one fundamental morphological adaptation which helps them to dissipate the force of the waves.
Answer:
Fossil record
Explanation:
Fossil record provides historical data documented by fossils, remains of organisms from earlier geological period that have been kept or preserved in rooks.
Morphology is the study of the shape or structure of a thing.
Radiometric data is the use of gamma rays to date rocks or carbon.
From the definitions above, only fossil records can be used to calibrate the clock, by providing information about lineage divergence, from fossils.
No new substance is produced.
