(a) Habitat loss and fragmentation
(b) The introduction of exotic, non-native species.
(c) Overexploitation or over harvesting.
(d) Habitat loss and fragmentation.
(e) Habitat loss and fragmentation
(f) Over exploitation or over harvesting
(g) Introduction of exotic , or non native species
(h) Over exploitation or over harvesting.
A. a breeze
A breeze is caused by unequal heating and cooling of adjoining areas of the surface of the Earth. It is strongest during the day in warm, dry weather. More intense solar radiation leads to stronger breeze. It can be countered or augmented by winds moving through pressure systems.
DNA or deoxyribonucleic acid is macromolecule composed of nucleotides (nitrogen nucleobase, deoxyribose sugar and phosphate group) which carries genetic information (instructions). Instructions within DNA are for development, growth, reproduction and many other functional roles of an organism.
All of the cells within an organism contain the same genome (full set of DNA-chromosomes). When cells begin the process of differentiation (cells become specified) their genome stays the same, but the gene expression is different (different genes are on or off).
Carbon-14 is useful to estimate the date of fossils that are less than 50,000 years old.
Option C
<u>Explanation:</u>
Carbon-14 is the best option to use by estimating the date of fossils that are below 50,000 years old. This is because the carbon-14' half-life is around 5730 years i.e. the existing Carbon-14 in the living bodies decays in 5730 years once they die.
That's the reason Carbon dating utilized to estimate the age of objects that are below 50,000 years old. Objects such as dead plants, wood or human artifacts that are younger than 50,000 years.
After the death of living beings, Carbon 12 and Carbon 14 existing in these organisms starts decaying by converting into Nitrogen. By estimating the leftover amount of carbon 14 in their bodies, scientists can evaluate their age.
