A sound wave is a wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.
Answer:
This type of secretion is known as Holocrine. Whereby the entire cell and content is released
Answer:
Unequal heating of the earth's surface causes temperature differences which cause pressure differences. Lower temperatures cause higher air pressure. Wind direction is described as where the wind is coming from. For example a northerly wind blows from the north to the south. Usually when we talk about uneven heating of the Earth's surface we are discussing convection. The uneven heating results in some of the atmosphere to be warmer than other parts and changes in volume and pressure which result in updrafts and can cause thunderstorms and other violent weather.
Explanation:
A Tsunami
Tsunamis are very long waves that can reach up to very big heights
The biggest tsunami ever was 1720 feet tall
Answer:
The correct answer is ''can change over time in response to environmental cues, allowing genes to be turned on or off as needed.''
Explanation:
Histones are a family of proteins involved in compacting DNA into structural units called nucleosomes. Histone modifications occur in response to environmental conditions, and modulate the structure of chromatin, that is, they alter the structure of nucleosomes and therefore chromatin, and thus activate the transcription process, in which the chromatin is in the euchromatin state (loose conformation, in which the DNA information can be read), or "off" state, in which the chromatin adopts the heterochromatin conformation (compact conformation, which prevents reading), respectively. These post-translational modifications are mainly acetylation, methylation, phosphorylation, although there are many others. These make up the “histone code” that can change the expression pattern of some genes by modifying the chromatin structure, activating or silencing these genes.
