Nanies 1. Any THREE mineral elements required for the formation of cell
membranes.
2. Any THREE mineral elements required for chlorophyll formation.
3. Any THREE mineral elements required for thee formation of strong
bones and teeth.
4. Any TWO mineral elements required for the formation. of nucleic
acids.
5. Any TWO mineral elements required for the formation of
proteins.
6. ONE mineral element that forms the central atom of chlorophyll.
7. ONE mineral element that is a component of haemoglobin.
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Scientist have long study the earths climate by looking at which of the following? the earths orbit. the earths rock layers. the antarctic ice. the earths oceans.

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.