Answer:
1. one long double helix.
Explanation:
- The Eukaryotic chromosome consists of the DNA protein structural complex that is formed by a manner and permits the large amounts of the DNA to be stored in the nucleus and structure to form a double standard helix made up of the double nucleic acid molecules and exists as a complementary pair.
sensation
Sensation can be defined as
the activation of sensory receptor cells by the stimulus. However, the
processing of the sensory stimuli into a meaningful pattern can refer to as
perception. Thus, not all sensation is usually perceived but perception is
dependent on sensation.
Answer:
Upwelling
Explanation:
Upwelling is the process through which cold water gets to ascends from the bottom, providing nutrients to the superficial stratum.
Upwelling is an ascending displacement of marine currents. The phenomenon<em> can also occur in lakes or freshwater dams</em>.
Wind blowing over the coast can cause surface water to move out to sea. This motion is complemented by a slow ascension of cold water coming from the bottom forward to the coast. This currents movement is known as upwelling.
Upwelling water is extremely cold and rich in nutrients, which result from remineralization, by bacterial action, of organic matter that accumulates in the deepest stratum of the water body.
The contact of minerals with photosynthesizing organisms in superficial layers produces a significantly high primary productivity.
Answer:
The statement that best describes process of succession after a forest fire is A. Small plants grow but are eventually replaced by larger plants.
Explanation:
The example illustrated in this question is a kind of secondary succession.
Succession can be described as the variations in a particular community or ecosystem over a period of time. Succession has two types which are
- primary succession
- secondary succession
Secondary succession results due to natural disturbances like fire, storms, etc.
In this kind of succession, a natural disaster completely destroys a community leaving behind only barren soil. Over a period of time, Small plants start to grow on this land. Herbaceous plants are the first ones to evolve. Eventually, the larger plants start to grow later and the land becomes revived again.
Answer:
Organic food
Explanation:
Organic food is the food grown by the agriculturists and farmers following the practices of organic farming.
The organic farming practices include the use of biological pesticides, restrict the use of synthetic products, no use of irradiation and promote ecological balance and conserve biodiversity.
The organic food provides many benefits as their nutrient content is high, the food is not contaminated with synthetic chemicals like growth hormones, are not genetically modified.
Thus, Organic food is the correct answer.
