Answer:
The correct answer is -
the independent variable - if fertilizer added or not,
the dependant variable - the height of the plant and
the standardized variable - 200ml water
Explanation:
In this study, the student wanted to see the effect of the fertilizer on the growth of the plant so the independent variable is the treatment of the fertilizer as manipulated or the independent variable is the factor which is affected or changed purposely during an experiment while other variables remain constant.
The dependent variable is the factor that is based or depends on the independent variable and measured to see the effect which is the height of the plants in this case.
The standardized or the control variable is the variable that remains constant throughout the experiment, 200 ml water treatment is the control variable in this experiment.
It would be "5.5 hours". Just divide 330 minutes by 60. 60 minutes = 1 hour.
Answer:
White light is made up of different colors. When white light enters water (like moisture in the air) it is bent (refracted). However the different colors are bent (refracted) by different amounts. So this different amount of bending has the effect of separating the white light into its colors and we see this as a rainbow.
Explanation:
Answer:
The parents would have brown eyes.
Explanation:
Given Bb x Bb, this tells you that both parents have brown eyes and are carriers for a reccessive trait (blue eyes). Remember that the uppercase letters are considered dominant and the lower case letters are considered recessive. In order for the blue eye allele to show, you would need to have the genotype: bb.
EmailSave<span>Jupiterimages/Photos.com/Getty ImagesSnakes in popular myth and representation have often been a source of intrigue, fear and demonization. These portrayals have made it more difficult to perceive of such a creature as imparting any benefits on its surroundings. This is most assuredly not the case, as snakes serve valuable roles in the great majority of ecosystems in which they are found. There are instances, however, where their sudden introduction has proven problematic.<span><span>IdentificationThe term biotic factors refers to the way in which an organism -- such as a snake -- interacts with its environment or ecosystem. In particular, it pertains to the way the presence, activities and feeding patterns of that animal affect other living things within that environment. Biotic factors of snakes involve how they impact the necessary balances that make their ecosystem function, especially with regard to a snake's role as both predator and prey.</span><span>PredatorsAll species of snakes are carnivorous or feed on meat. While different species have various methods for killing their prey (constriction or poison), snakes, in general, hunt a variety of creatures. These include, but are not limited to, rodents, insects, birds, small deer, as well as fellow reptile species. In human eyes, this often characterizes snakes as a valuable form of pest control. Snakes' prolific presence in many different habitats -- water, forests, mountains, deserts and other -- make them formidable predatory forces in regions the world over.</span><span>PreyWhile the conventional image of snakes usually portrays them as dangerous predators, the fact is that snakes themselves are prey to many animals. They are not always on top of the food chain. This is especially the case for smaller snakes that are not venomous nor big enough to ward off a large attacker. Some species of birds eat snakes, as do coyotes, foxes and mongoose. When humans are present, snakes are used for their skins and, on occasion, for food. This demonstrates snakes versatile role in the ecosystems as both hunter and hunted.</span><span>Florida Case StudyWhile snakes are natural components of many ecosystems, there is the possibility that the introduction of a certain specie to a foreign environment can be dangerous. This is reflected in the early 21st century 'invasion' of the state of Florida by the imported Burmese python. While many snakes already existed in related areas of the state, the new python found no natural predators and, in fact, found itself hunting the former head of the food chain, the alligator. Scientists are still pursuing methods for monitoring the Burmese python and for stemming an expansion of the species throughout the state ecosystem.</span></span></span>
