How does the gradient of the stream effect the velocity???

Biology

1 answer:

finlep [7]3 years ago

7 0

If the gradient or slope is high then the water flow will go faster because suppose water is flowing down from a skateboard ramp, it would flow faster than water flowing throw a straight pipe.

Here's a picture I drew to help you!

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If someone gets hot, their body sweats to cool it down. If someone gets cold, their body shivers

k0ka [10]

A) homeostasis and B)denature

7 0

3 years ago

Consider the scenarios described below. Match the concept described by the scenario with the theory.

astraxan [27]

Answer:

1 - natural selection

2 - uniformitarianism

3- inheritance of acquired characteristics

4 - catastrophism

Explanation:

1. Natural selection refers to the evolution of organism or changes in the characterstics of organism depending on the environmental conditions. Hence, the lizard moved on fantasy island evolved with larger head and stronger bites as per the environmental condition.

2. The concept of Uniformitarianism states that the natural geological processes happening in present have already occured in past with same intesity and rate. Hence, geologist uses the phrase "The present is the key to the past" for formation of mountain, rock formation and water movements.

3. Inheritance of acquired characteristics are the characteristic acquird by the ancestors and transmitted that gradually acquired characteristic to their progeny. Hence, the rats acquire the charactieristics and transfered it to the next generations.

4. Catastrophism means the regular occurrence of meteorological and geological disturbances to explain the existence the fossil record. Hence, teh mass exticiton due to asteroid impact is an example of Catastrophism.

So, the correct options in sequential order is natural selection, uniformitarianism, inheritance of acquired characteristics, and catastrophism.

3 0

3 years ago

Which of the following can NOT be prevented with a vaccine?

grandymaker [24]

Answer:

listeriosis

Explanation:

A vaccine is used to provide active acquired immunity to the host by supplying them with a biological preparation which is often made up of attenuated organism, its associated immunogenic particle, protein, DNA, etc.
Today there are vaccines available for a wide variety of diseases however there is no preventive vaccine for listeriosis.
Listeriosis is a disease caused by <em>Listeria monocytogenes</em> and it is a very serious disease often caused due to the consumption of contaminated food.
There is unavailability of a commercially available vaccine against listeriosis although a lot of research is underway to prepare a vaccine to reduce the mortality rate.