It has been estimated that ‘slash and burn’ agriculture is
used by up to 500 million people worldwide. The term describes the practice of
cutting and/or burning of natural vegetation for conversion into agricultural
fields. Besides the disastrous implications for forest ecosystems, the practice
can impact the atmosphere in two main ways if burning is implemented. Firstly
by causing air pollution from the smoke, and secondly by increasing carbon
dioxide in the atmosphere, which is a greenhouse gas and a driver of climate
change. Living trees also remove carbon dioxide from the atmosphere during
photosynthesis, and the process of ‘slash and burn’ effectively removes their
carbon capturing contributions to ameliorating climate change.
A lake that freeze over is helpful to the organisms inside the water because, the solid ice serves as a barrier between the water and the cold air above the water. The ice prevents the chilled air surrounding the water body from getting to the organisms inside the water. <span />
Answer:
Polysaccharide Functions
The three main functions of polysaccharides are providing structural support, storing energy, and sending cellular communication signals. The carbohydrate structure largely determines its function. Linear molecules, like cellulose and chitin, are strong and rigid.
Explanation:
: A carbohydrate that can be decomposed by hydrolysis into two or more molecules of monosaccharides especially : one (such as cellulose, starch, or glycogen) containing many monosaccharide units and marked by complexity.
The first land animals had to adapt to this whole new set of conditions that were significantly different than the ones in the water.
One of the biggest challenges was to protect the embryo in these new harsh conditions. The amphibians and members of earlier lineages such as fish are dependent on water for their reproduction, but reptiles, birds, and mammals have developed the amniotic egg during the course of their evolutionary history enabling them to produce offspringing on the ground.
Members of this group either carry their offspring inside the female's womb or lay eggs that are protected with an outer tough layer. Both the young in the womb and the ones inside an egg are protected but the embryonic membranes amnion and chorion that contain water and nutrients necessary for the development of the embryo and therefore are called amniotes.
Answer:
Watery, sometimes foul-smelling diarrhea that may alternate with soft, greasy stools.
Fatigue or malaise.
Abdominal cramps and bloating.
Gas or flatulence.
Nausea.
Weight loss.
Explanation:
because the parasite is traveling through the intestine(which is a very important body part in you body)