Geysers are formed when groundwater is heated by nearby magma. True or False?

QUESTION POSTED AT 06/12/2019 - 12:34 PM

Answered by admin AT 06/12/2019 - 12:34 PM

Geysers are hot springs in which water intermittently boils. The heating up of the water is because of the presence of the nearby magma vaporizing the water and steaming it out in the air. Therefore for this item, the answer is TRUE. Geysers are also said to be only temporary features.
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Algal blooms occur due to the presence of an excess amount of nutrients, like phosphorus, in fresh water. How does excess phosphorus get into fresh water? A) The nutrients are added to the water by fishermen to feed the fish. B) The nutrients leak into fresh water from oil refineries in the vicinity. C) The nutrients are a part of the fertilizers that are often washed away into ponds. D) The nutrients are formed by the decomposition of organic wastes dumped into fresh water.

The algal blooms can be defined as the rapid growth of the algae in the water bodies. These algal blooms are a result of the excess amounts of nutrients, such as phosphorus, in the water. These excess nutrients are released in the fresh water bodies as a result of the fertilizers that are washed away from the agricultural fields nearby. The fertilizers are rich in nutrients such as phosphorus to help the plant to grow. When they get washed into the water bodies, they promote the growth of the algae leading to algal bloom.

Hence, the correct answer is 'Option C - The nutrients are a part of the fertilizers that are often washed away into ponds'.

ANSWERED AT 01/04/2020 - 01:35 PM


QUESTION POSTED AT 01/04/2020 - 01:35 PM

Algal blooms occur due to the presence of an excess amount of nutrients, like phosphorus, in fresh water. How does excess phosphorus get into fresh water? A) The nutrients are added to the water by fishermen to feed the fish. Eliminate B) The nutrients leak into fresh water from oil refineries in the vicinity. C) The nutrients are a part of the fertilizers that are often washed away into ponds. D) The nutrients are formed by the decomposition of organic wastes dumped into fresh water.

Answer: Option C

Explanation:

The nutrients that is carried away by the water from the agricultural wastes are part of the fertilizer that is put on to increase the growth of the plants.

The nutrients from the fertilizer is carried away by the water that passed from the field to the nearby freshwater source.

The water carries phosphorus which increases the growth of the algal bloom in water. The algae uses all the oxygen from the water and makes the water deficient of oxygen.

Hence, the correct answer is option C

ANSWERED AT 01/04/2020 - 01:30 PM


QUESTION POSTED AT 01/04/2020 - 01:30 PM

Moves substances to and form all cells of the body ? What is the human organ system

I believe it's the Circulatory system

ANSWERED AT 01/04/2020 - 01:26 PM


QUESTION POSTED AT 01/04/2020 - 01:26 PM

What structure is formed during the unwinding process of replication? polymerase nuclease replication fork double helix

Nuclease  I am pretty sure

ANSWERED AT 01/04/2020 - 01:11 PM


QUESTION POSTED AT 01/04/2020 - 01:11 PM

What kind of eruption is likely to occur in a volcano having magma that is low in silica?

A very small one because a volcano with low silica was no eruption

ANSWERED AT 01/04/2020 - 01:11 PM


QUESTION POSTED AT 01/04/2020 - 01:11 PM

An example of natural selection is the tail of a male peacock. The females of the species choose mates based on the colors of the males’ tail feathers. If females begin using different criteria than feather color when they choose mates, what would most likely happen to the tails of peacocks over time? increased variation in tail feather color because the selection pressure has been relieved increased variation in tail feather color because the peacocks try different ways to impress the females decreased variation in tail feather color because no form of the trait is advantageous decreased variation in tail feather color because the only reason for variation was selection pressure

Answer:

The correct answer is option D, decreased variation in tail feather color because the only reason for variation was selection pressure

Explanation:

According to Charles Darwin, traits that help an individual in selecting mates are favored by the sexual selection while all other normal traits are favored by natural selection.Thus , it is believed that this sexual mating pressure among the male peacocks produce large variation in the color and pattern.The male peacocks compete with each other to attract the female on the basis of their colorful tails and its varied patterns.

ANSWERED AT 29/03/2020 - 11:15 PM


QUESTION POSTED AT 29/03/2020 - 11:15 PM

Muscles are attached to the bones by tendons. True False I think true :)

True very much ..............

ANSWERED AT 29/03/2020 - 06:32 PM


QUESTION POSTED AT 29/03/2020 - 06:32 PM

Why did small, rocky planets form close to the sun?

The planets in our Solar System formed from the solar nebula – the disc of gas left over from the formation of our Sun. ... The gas giants on the other hand, formed far enough away from the Sun that the temperature was cool enough for these volatile gases to condense, and form these huge, less dense planets

ANSWERED AT 29/03/2020 - 06:30 PM


QUESTION POSTED AT 29/03/2020 - 06:30 PM

Observations of space show that galaxies are moving away from us as observers on Earth how is this related to how the universe is formed?

Answer:

Explanation:

since the big bang, Edwin Hubble in 1929 proved that the universe is expanding by the red shift theory, showing that things farther away from the earth were moving away faster so that the universe must be expanding.

ANSWERED AT 28/03/2020 - 12:25 PM


QUESTION POSTED AT 28/03/2020 - 12:25 PM

True or false an organisms genotype is its genetic code

I believe the answer is true

ANSWERED AT 28/03/2020 - 12:14 PM


QUESTION POSTED AT 28/03/2020 - 12:14 PM

Siblings will have the same nuclear DNA, but different mtDNA. true or false

Answer:

its false

Explanation:

ANSWERED AT 28/03/2020 - 12:09 PM


QUESTION POSTED AT 28/03/2020 - 12:09 PM

The Prime Mover is a muscle doing the work. It is contracting and may be moving a bone (or structure.) True False

I think it is True but i dont really know why i just have a feeling that that is the answer to your question

ANSWERED AT 28/03/2020 - 12:07 PM


QUESTION POSTED AT 28/03/2020 - 12:07 PM

In a paragraph address these following questions: • How does an underwater earthquake cause a tsunami? • Why do some earthquakes cause more damage than others? the paragraph needs to also include the following things: • discuss how the different types of waves are formed and describe how the waves travel • explain how scientists use waves to track and analyze earthquakes • cover recent events involving earthquakes and/or tsunamis that illustrate the points made in your explanation

What is an Earthquake

Earthquakes are vibrations in the earth's crust They occur along all plate boundaries but are more destructive usually at destructive plate boundaries

How are they measured

The magnitude or size of an earthquake can be measured by an instrument called a seisometer and are shown on a seismograph. The earthquakes are measured on the Richter scale from a value of 1 to 10. Each level of magnitude is 10 times more powerful than the previous. Therefore a level 7 is 100 time more powerful than a level 5.

Why do some earthquakes cause more damage than others?

Some earthquakes take place in rural areas where few people live and little is damaged

If they occur near large urban areas with many people, transport services, large buildings and services such as gas and electricity - there can be a great amount of deaths and damage

In Poor countries - LEDC's they have poorly built buildings, few emergency facilities, and the equipment to help rescue people - a good term to use is that they have a poor infrastructure.

In rich countries - MEDC's such as the USA they prepare for an earthquake with drills and have a great deal of trained emergency personnel and equipment to go to help the injured. They also try to build to withstand earthquake damage - ie The Transamerica building

The time of day can be important - If the earthquake hits when it is the rush hour or when there is a large number of people located in a certain area - this can cause a great loss of life

Obviously if they occur near to coasts then Tsunamis can cause a great deal of damage and deaths such as the 2004 Boxing Day Tsunami

ANSWERED AT 28/03/2020 - 12:00 PM


QUESTION POSTED AT 28/03/2020 - 12:00 PM

Drag the names of the prevailing winds to the areas where they form in the Northern Hemisphere.

Air is curved to the right in the Northern hemisphere because of the Earth’s rotation and the Coriolis force. As a consequence, air movement in the polar cell circulation forms the polar easterlies. In the circulation cell that lies between 60° and 30° north, prevailing westerlies is formed.North trade winds on the other hand is formed in the tropic circulation cell. 

ANSWERED AT 28/03/2020 - 11:37 AM


QUESTION POSTED AT 28/03/2020 - 11:37 AM

Which of the following has not yet been proven but will add support to the Big Bang Theory if true? The universe is expanding Overall density of ordinary matter must be roughly 4% of critical density There is an abundance of the light elements H, He, Li There is a widespread cosmic microwave background radiation

Redshift shows that the universe is expanding, so that is already true.

I don't know anything about B

I'm pretty sure C is already true

And D has already been proven as fact.

I would go with B, but correct me if I'm wrong.

ANSWERED AT 28/03/2020 - 11:36 AM


QUESTION POSTED AT 28/03/2020 - 11:36 AM

Which of the following best compares the male and female reproductive structures of a gymnosperm? A Gymnosperms produce flowers, and the male stamens produce pollen that fertilizes the egg inside the female ovule. B Gymnosperms produce male cones and female cones, and the pollen from a male cone fertilizes the egg inside a female cone. C Gymnosperms have male sporangia and female archegonia, and spores fertilize eggs contained inside the embryo sac to form zygotes. D Gymnosperms exist as male and female gametophytes, and the male plant produces spores that fertilize eggs inside the female archegonia.

Answer: B Gymnosperms produce male cones and female cones, and the pollen from a male cone fertilizes the egg inside a female cone.  

Gymnosperms are terrestrial plants, which lacks flowers. The ovule or seeds are remains naked in hard woody structures called as cones. In the gymnosperms the green sporophyte generates cones that contains male and female gametophytes. A male cone consists of microsporophylls where male gametophyte also called as pollen are produced and released into the wind. The wind act as a agent for pollinating the female gametophyte present in the female cone.  Inside the female cone the megaspore mother cell produces four haploid megaspores, one megaspore divide itself to form the female gametopyte. The fusion of the pollen with the female gametophyte produces diploid zygote, which later on divides to form the embryo.

ANSWERED AT 28/03/2020 - 11:15 AM


QUESTION POSTED AT 28/03/2020 - 11:15 AM