How much water on Earth is salt water?
Answer:
97 percent
Explanation:
Science
Answer:
below
Explanation:
Over 97 percent of the earth's water is found in the oceans as salt water. Two percent of the earth's water is stored as fresh water in glaciers, ice caps, and snowy mountain ranges. That leaves only one percent of the earth's water available to us for our daily water supply needs.
not all words are used.
will mark brainliest if correct.
Answer:
I D K
Explanation:
I just wasted 10 minutes on this and I am so confused:)
what are the differences between ligaments & tendons
10 points!!!
In a series circuit with three bulbs,
a.
there are many paths for the current to take.
b.
the remaining two bulbs are not affected if one bulb burns out.
c.
all of the bulbs become dimmer as more bulbs are added.
d.
a switch is never used.
Answer:
C
Explanation:
Because more bulbs are add the dimmer they get
In males, the 4 haploid or diploid cells at the end of Meiosis 2 become 4 sperm cells.
If a DNA molecule is made up of 14% Thymine, theoretically, what percentage would be made up of Guanine?
Answer:
I expect to find
Explanation:
A=30% C= 20% T = 36% G=14%
Why does the ability to lay 1,000 to 5,000 eggs increase the fitness of the species L. clamitans clamitans?
It increases the probability that moving water will promote gene flow from one population to another.
It increases the chance of the recombination of alleles, leading to genetic drift in the population.
It increases opportunities for offspring to compete for limited resources.
It increases the probability that some offspring will survive long enough to reproduce.
Answer:
increases opportunities for offspring to compete for limited resources.
Complete burning of fossil fuels releases carbon primarily to what part of the biosphere?
NO LINKS OR I WILL REPORT YOU!
Answer:
Atmosphere
Explanation:
carbon dioxide is naturally released into the atmosphere by the decay and flatulance of animals. But you extract fossil fuels from the ground and burn them. The burning of fossil fuels is called combustion.
Describe Okasaki fragments.
Answer:
Okazaki fragments are short sequences of DNA nucleotides which are synthesized discontinuously and later linked together by the enzyme DNA ligase to create the lagging strand during DNA replication.
Explanation:
Cell differentiation causes embryonic
cells to become which of these cells? A) prokaryotic cells B) specialized cells C) stem cells
Answer c
Explanation:
Compare primary succession and climax community. Be sure to identify how long-term survival of species is dependent on resources that may be limited.
Answer:
Primary succession is the colonization of species of organisms on life-less barren lands after a volcanic eruption, newly formed land, or sand dunes. Lichens and mosses are the known primary succession community of organisms that helps in developing conditions for secondary succession by breaking rocks and providing soil.
After a fair amount of time, there are new species of organisms that grow and colonize in the land and these are, and ultimately the community becomes fairly stable. A climax community is a more stable, mature community that undergoes little or no change which can live for hundreds of years on the land.
The long-term survival of species is dependent on various kind of resources that may be limited, this can be explained by the lichens and mosses that have enough amount of nutrition and resources during primary succession but as new organism comes with complex structure and competes with these lichens and mosses their number decline due to limited amount of resources.
Earth's core is the source of the energy that drives the movement of tectonic plates. Which two processes help transfer this energy outward to earth's crust?
Answer:The two processes are CONDUCTION and CONVECTION
Explanation:
The Energy produced in the Earth core is generated by Sun, gravitational force , radioactive decay, and the Earth' rotation, To maintain balance in the earth, The processes of CONDUCTION and CONVECTION transfer energy (HEAT) to Earth's interior, which also helps the movement of tectonic plates at a constant rate.
Now, inside the earth mantle is made up of hot solid rock and because Conduction occurs more in solids, Its currents helps the continuous transfer of heat energy from the warmer mantle at the bottom to the cooler mantle at the top While Convection currents in the core move thermal energy causing the rising and sinking of warm and cooler molten rock inside Earth, thereby maintaining the motion of tectonic plates and creating a balance in the earth.
Answer:
Conduction and Convection
Explanation:
Why are molecular clocks important in the construction of cladograms? They compare the frequency of reproduction to determine which traits evolved through mutations. They compare the genes inherited by a species to determine descendants. They compare the number of mutations to determine how long ago species separated and evolved.
Answer: They compare the number of mutations to determine how long ago species separated and evolved.
You're welcome!
Answer:
C.They compare the number of mutations to determine how long ago species separated and evolved.
Explanation:
this is correct
The weight of astronaut on the moon will be
A) Less because the moon has less mass
B) Less because the moon has more mass
C) More because the moon has less mass
D) More because the moon has more mass
Answer:
A
Explanation:
The gravity of a body increases with its size. The moon is smaller than the Earth, so an astronaut will weigh less on the moon than they will on Earth. Good luck ^^
Explanation:
A because im big brain
Pioneer species such as lichen and moss inhabit an area after a major disturbance such as a volcanic eruption. Over time, other species are found in the disturbed area and the number of pioneer species decreases. Why does the number of pioneer species decrease? The amount of available sunlight is reduced. The pioneer species can no longer thrive. ⊝ The area has more soil to support complex plants. The competition increases between organisms. ⊝ The area is more susceptible to the wind. Seeds are captured in the pioneer plants and germinate at a higher rate. ⊝ The temperature is not as extreme as it was following the disturbance. Fewer of the pioneer species reproduce. ⊝ CLEAR ALL ❮ PREVIOUS ... 3 4 5 6 7 8 9 10 11 12
Answer:
The competition increases between organisms.
Explanation:
Primary succession occurs after a disturbance or disaster that leaves open spaces with no living organisms. These new open areas are the case, for instance, of a bare rock exposed due to a retreating glacier, a volcanic activity, or an intense fire. No previous species inhabiting this area are left.
These scenarios allow new species to grow. With time, new species arrive and manage to establish again. The order of the establishment depends on the strategies of each of the species to survive.
First, pioneer species arrive. These are the first inhabitants, mostly lichens or plants with the capability of surviving in such an environment. Only a few pioneers can establish in the open space. Pioneers modify the habitat. They make it more suitable for the posterior establishment of later species, converting rock into fertile soil. As conditions get better, new species arrive like grasses. Grasses and pioneers keep modifying the ground and making it better with time. Competition becomes more frequent between species. The first species are eventually eliminated by competition, while new species keep appearing and competing for resources. Habitat modification keeps on going while new species establish. They produce shadows, alter the temperature, and humidity, fertilizing the soil, competing for resources. Competition becomes more frequent between species. This sequence continues until there is not more facilitation, and the commuting reaches a climax, becoming stable and lasting for hundreds of years until another disturbance occurs.
8. Which set of chromosomes represents a mutation? *
8 points
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Answer:
8 points
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B) Now imagine that a hurricane has deposited large patches of light colored sand among the
rocks. Use the axes below to sketch how you think your graph from part A would change under
these new conditions. What type of selection is acting under these new conditions?
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Five general characteristics of organisms in kingdoms Plantae or Fungi are listed in the box. Which table correctly lists the characteristics of the organisms in the two kingdoms?
Answer:
B
Explanation:
C table correctly lists the characteristics of the organisms in the two kingdoms. So, the correct option is C.
What is Five kingdom classification?The system of biological kingdoms is the way in which science classifies living things in order of evolution according to their ancestors which means all species that make up these five large groups. Some recent theories divide them further into six or seven showing the common ancestors and sharing some of their genes which belong to the same family tree.
Along with the kingdoms of living things, there are other taxonomic categories within the same classification system, such as, for example, domain, kingdom, phylum, class, order, family, genus, and species.
Therefore, the correct option is C.
Learn more about Five kingdom classification, here:
brainly.com/question/14489978
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Why do birds migrate south during the winter?
A. strong northern winds drive them south
O B. an increase in predators drives them south
O C. to find food
O D. to find better nest building materials
Answer:
C. to find food.
Explanation:
It is hard to find food in the winter for animals besides humans. So they need to head south for warmer climates.
Natural selection is a very important part of evolution. Select all of the CORRECT statements below
about the theory of natural selection.
More individuals are produced than can survive
Natural selection favors the strongest and fastest individuals in a population
There is genetic variation in populations
Beneficial traits are passed on to future generations
Answer:
Natural selection favors the strongest and fastest individuals in a population
Beneficial traits are passed on to future generations
There is genetic variation in populations
Explanation:
I just did this last trimester in natural science.
Briefly describe what uses the oceans can pose to humanity. Write your response in the essay box below.
Answer:
Water, fresher climate, not only scientific factors but also a psychological factor (nice beaches, palms, other wildlife, etc.)
Which is the most likely result if the Ubx gene was activated either before or after it normally is activated in the sequence of Hox gene expression?
A. The insect develops slightly shorter or longer abdominal legs.
B. The insect develops normal body parts at either a slower or more rapid rate.
C. The insect develops normal body parts but in an altered time sequence.
D. The insect develops legs in other parts of its body.
Answer:
D. The insect develops legs in other parts of its body.
Explanation:
HOX genes, also known as homeotic genes, are evolutionarily conserved genes (containing homeobox sequences) that encode master regulators of embryonic development in animals. Hox genes modulate the body plan of an embryo along the head-tail axis. In general, these genes are arranged in the same order as they are transcriptionally expressed along the anteroposterior body axis. Moreover, Ultrabithorax (Ubx) is a Hox gene that is responsible for the proper development of the third thoracic segment in insects. In Drosophila, it has been shown that different segments of the leg regulate their size in response to Ubx expression.
Which of the following best describes natural selection?
A. organisms vary in their physical traits, and some are inherited
B. Organisms compete for food and shelter
C. organisms best suited to their environments are most likely to survive and reproduce
D. Organisms produce more offspring than can survive
On the diagram below, what is the name of region B?
Which sequence furthers scientific knowledge? Hypotheses generate a scientific question, leading to observations, which can be tested through an experiment. Observations generate a scientific question, leading to a hypothesis, which can be tested through an experiment. Hypotheses generate a scientific experiment, leading to observations, which can be tested through a question. Observations generate a scientific experiment, leading to a hypothesis, which can be tested through a question.
Answer:
The correct answer is - Observations generate a scientific question, leading to a hypothesis, which can be tested through an experiment.
Explanation:
In any scientific knowledge development process, scientists need to follow the scientific process in a particular sequence that helps in developing and testing a hypothesis.
The sequence has:
observation: Observation requires you to pay attention to occurrences around
Forming question: on the basis of observation form a question about why that occurrence happens.
Hypothesis formation: The hypothesis is your initial prediction on why that happens.
Experiment: The experiment is being done in order to collect data and analysis so you can test your hypothesis
Answer:
Its b
Ur welcmom
The sea is the ________________________ ecosystem in the world .
the diagram shows part of a human female reproductive system.
which structure is labeled 1 in the diagram? (i put the answer in the pic)
You are correct. It is the Fallopian Tube.
Answer:
D: fallopian tube is correct
Which molecule is produced in the aerobic breakdown of a glucose molecule?
A. Water
B. Oxygen
C. Light
D. Alcohol
E. NADPH
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E. NADPH
thankshope it helpspls mark as brainliestAnswer:
E
Explanation:
it enters the citric acid cycle and generates reducing equivalents in the form of NADPH
How does a fire help grasslands?
Choose all that apply
Answer:
In most grassland ecosystems, fire is the primary mode of decomposition
Explanation:
Grasslands burn more readily than forest and shrub ecosystems, with the fire moving through the stems and leaves of herbaceous plants and only lightly heating the underlying soil, even in cases of high intensity. In most grassland ecosystems, fire is the primary mode of decomposition, making it crucial in the recycling of nutrients. In some grassland systems, fire only became the primary mode of decomposition after the disappearance of large migratory herds of browsing or grazing megafauna driven by predator pressure. In the absence of functional communities of large migratory herds of herbivorous megafauna and attendant predators, overuse of fire to maintain grassland ecosystems may lead to excessive oxidation, loss of carbon, and desertification in susceptible climates. Some grassland ecosystems respond poorly to fire.
A fire helps grasslands through the following:
Keeps trees from overtaking the grasses.Preserve biodiversity.What is Fire?This is the visible aspect of combustion of fuel and other materials to produce heat and flame.
controlled burning increases biodiversity by increasing spatial and temporal variation and helps prevent trees from overtaking grasses.
Read more about Grassland fire here https://brainly.com/question/1212527
3. Which type of heat transfer causes your face
to feel warm when you sit in the Sun?
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A conduction
6 convection
© insulation
O radiation
