Almost all living creatures on our planet depend on plants for food and oxygen, either directly or indirectly. So, if all the plants disappeared, eventually so would almost all the other life. Also, Earth would be hotter.
The fight or flight system is a reaction that the body undergoes when put in an either stressful or frightening situation. It includes both the nervous and endocrine system.
The sympathetic division of the peripheral nervous system is used in this response as the sympathetic nervous system works up the body, increases the rate of breathing, heart rate, dilates the pupils, produce more sweat and slow the digestion rate. This reaction happens in the flight or fight system.
The main description of lithogenous came from rocks - Produced
as surface rock is broken down by weathering like wind, rain, freezing/thawing.
It is transported to the oceans by water, wind and gravity much sediment
remains on continental margins. However, some sediment ends up on deep ocean
floor as fine rock powder called red clay, brown clay, or brown mud. While Biogenous
came from remains of living organisms shell and coral fragments. Hard skeletal parts of single-cell organisms
of either calcareous (soluble shell) material or siliceous (non-soluble, clear,
hard) material.
Answer: Option D.
Whether their cell walls have a thin or thick layer of peptidoglycan.
Explanation:
Gram positive bacteria have thick cell wall layer of peptidoglycan and their cells stain purple when subjected to gram staining which is crystal violet. Examples are anthrax bacteria, diphtheria e.t.c.
Gram negative bacteria have thin cell wall layer of peptidoglycan and tend to retain the color when stained with crystal violet or gram staining. Examples are E.coli, pseudomonas aeruginosa e.t.c. Gram staining is important to differentiate between gram positive from gram negative bacteria.
70 percent of Earth is covered by water meanwhile 30% is covered by land.
