The modern seed plant phyla of ginkgos, cycads, conifers, and gnetophytes are collectively known as gymnosperms.
Phylum is a taxonomic rank below state and above magnificence in the organic class, particularly of animals. In plant life, the corresponding rank is department. instance: Phylum Chordata consists of magnificence Mammalia (mammals), magnificence Aves (birds), magnificence Ascidiacea (sea squirts), and so forth.
At its maximum simplicity, a phylum may be described in ways: as a collection of organisms with a positive degree of morphological or developmental similarity (the phenetic definition), or a collection of organisms with a certain diploma of evolutionary relatedness (the phylogenetic definition).
The phrase become later modified to phylum. There are approximately 35 animal phyla, 12 plant phyla, and seven phyla of fungi. The microorganism, including the archaea, are grouped into roughly 34 phyla, despite the fact that the relationships between these organizations aren't as nicely hooked up.
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Answer:
The correct answer is A)
To limit the potential flooding damage that could result if an earthquake happens and the dam spills over
Explanation:
According to the text, seismic risks are very high for dams in that region. One of the reasons is that some of the dams were built many years ago when civil engineers didn't have information about what an earthquake could do to dams.
Citing an occurrence that happened in 1899 as an example where thousands of people were killed as a result of a failed dam, it is feared that should same reoccur, the loss may be more because about 300,000 people occupy the flood zone along the Alameda Creek below the dam.
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Answer:
False
Explanation:
A double-helical DNA molecule consists of two DNA strands. A DNA strand has free 5' phosphate at one end and a free hydroxyl group (OH) at its 3' end. A DNA double helix is said to be antiparallel since each end of the double helix has an exposed 5' phosphate on one strand and a free 3' hydroxyl group (OH) on the other. This means that the two DNA strands run in opposite directions. A phosphate group is always esterified to the 5' carbon of the pentose sugar; never at its 3' end.
