Pulse can be felt in neck, temples and veins.
Answer:
<h2> "Archaea are older organisms than eukaryotes"
</h2>
<h2>
Explanation:</h2>
Archean are group of organisms classified under the domain Archae bacteria. They are found in environments with extreme conditions e.g.
high temperature etc.
They are prokaryotic in nature i.e. they do not possess a membrane-bound nucleus in their cells.
Based on this, archaea are not classified under the same domain as bacteria (domain- protista). They are unicellular organism, archaea are older set of organisms than eukaryotes.
Answer: hybridisation between related species is unlikely to contribute to adaptive speciation.
Explanation: any population has natural genetic variation. The available resources are insufficient for all plants (and conversely, not all offspring survive). Natural selection favours variations better suited to the conditions.
Although hybridisation is more common in plants than animals, and can lead to speciation, adaptive radiation from an ancestral species is the general response to environmental change, such as from rainforest to savanna. There is low probability of selective advantage from hybridisation of two ancestral species adapted to niches within the original habitat when the conditions in those niches changes significantly.
Answer: Calcium and vitamin D are the two most important nutrients for bones. Most cells in your body use calcium to signal various processes. It's also responsible for the strength and hardness of the bones.
