Ocean currents can be generated by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes.
The correct answer is answer choice b.
Answer:
<em>The correct option is D. Plants</em>
Explanation:
Plants can be described as eukaryotic organisms which are able to make their own food. The process by which plants make their own food is termed as photosynthesis. During photosynthesis, plants convert water and carbon dioxide into glucose and oxygen in the presence of sunlight.
The oxygen produced by the land plants accounts for half of the oxygen present in the Earth. Hence, option D is correct.
Other options are false because none of them can carry out photosynthesis.
Answer:
B
Explanation:
Chemoreception is a physiological process where an organism reacts to a chemical stimulus in their environment.
Pheremones are chemical substances that organisms release into their environments as a form of communication.
Pheremones bind to chemoreceptors which causes a response once the nervous system of the bee has analyzed and identified the chemical substance. The bee can then react with further communication.