The best answer is D.
Hormones are chemical messengers secreted mostly into blood and also extracellular fluid by specialized tissue of the endocrine system and affect the functioning of other tissues or cells.
Most hormones circulate in blood and come in contact with essentially all cells, but a particular hormone will only affect a limited number of cells, which are termed as target cells to that hormone.
A target cell responds to a particular hormone because it bears receptors for that hormone.
For example the red blood cells have receptors for the hormone called insulin which is produced by the pancreas. The red cells are able to take in glucose when their receptors bind to insulin.
Dorsal means back as in the back area. Example~ Many dolphins have a pronounced beak and all have a central dorsal fin and sharp teeth for feeding, mainly on squid and fish.
<span>developing a technique for observing an object that has yet to be observed
</span><span>Thus, to achieve the creative approach above the researchers must utilize and apply the </span>scientific method in gathering, interpreting and analyzing empirical evidence<span>. </span>
<span>Empirical evidence, data or knowledge is an obtained set of facts or figures or existing and presenting data that was yielded during the process of experimentation or scientific discovery. These empirical data or evidence is further studied and investigated by the scientist in a formal scientific approach which follows the steps of observation, making a hypothesis, gathering data, interpreting data and evaluating the data. These steps of the scientific approach are vital in the course to explain and discuss the result and evidence obtained during the process. </span>
Answer:II) Deforestation and suburbanization reduce an area's net primary productivity.
III) Increasing atmospheric concentrations of carbon dioxide could alter Earth's climate.
IV) By using fossil fuels we are destroying a nonrenewable resource.
Explanation:
The global carbon cycle can be defined as the cycle of carbon in which the carbon is transformed and changed into forms while transferring to atmosphere, land, ocean and in the form of fossil fuels.
The deforestation and suburbanization processes will likely to affect the contribution of the plant in the net primary productivity generate due to photosynthesis process that involves the production of carbon products in the form of glucose by atmospheric carbon dioxide.
The increase in atmospheric concentration of carbon dioxide through the burning of fossil fuels is likely to warm the earth climate. The burning of fossil fuel is likely to increase the abundance of carbon dioxide in the air.
The fossil fuels are the source of non-renewable resource utilized for the purpose of generation of thermal energy. These resources once consumed will not get replenished thus this will reduce the carbon level produced due to burning of fossil fuels in the future.
