Answer:The discovery of well-preserved pelves and a partial pelvic fin from Tiktaalik roseae, a 375 million-year-old transitional species between fish and the first legged animals, reveals that the evolution of hind legs actually began as enhanced hind fins.
Explanation:can i have brainless?
Tiktaalik roseae was famous for his discovery of well-preserved pelves and a partial pelvic fin in aquatic organisms. These structures support aquatic organisms to a large extent.
What is Evolution?Evolution may be defined as a methodology through which gradual changes in organisms may take place over many generations. Due to this, a species of animals, plants, or insects slowly change some of their physical characteristics and adapt to nature.
According to the context of this question, it was the time of about 3.75 million years ago, when the transition between fish and first-legged animals was observed. This observation clearly demonstrates that the evolution of hind legs in the animals was actually initiated through the hind fins of the fish.
Therefore, the importance of Tiktaalik roseae to the study of evolution is understood by the fact of describing well-preserved pelves and a partial pelvic fin in aquatic organisms.
To learn more about Evolution, refer to the link:
https://brainly.com/question/4207376
#SPJ2
Given a parent genotype of AA, what are the possible gametes that they can produce?
Plz someone Help
Jet streams are narrow bands of strong wind that flow between cold and warm air masses. Which direction do these winds blow on Earth?
The winds don't move
From North to South
From East to West
From West to East
Answer:
east west
Explanation:
(*˘︶˘*).｡.:*♡good luck!!
Will give brainliest... Why does a population not level off during the same year it reaches zero population growth?
Answer:
Because parents will still be living for decades. What factors contributed to the world's overall population growth in the last 150 years? Having ample food, shelter, water, and technology.
Explanation:
Hope it helps u
FOLLOW MY ACCOUNT PLS PLS
what are the proteins that are found all throughout the cell
Animal cells or plant cells??
Answer:
Explanation:Ribosomes are found in many places around a eukaryotic cell. You might find them floating in the cytosol. Those floating ribosomes make proteins that will be used inside of the cell. Other ribosomes are found on the endoplasmic reticulum.
How does reusing, reducing and recycling conserve energy?
Answer: Recycling saves energy by reducing or eliminating the need to make materials from scratch. ... By using recycled materials instead of pulling new natural resources, manufacturers can make the same products with less energy and expense.
Explanation:
I hope this helps you! Have a wonderfull day! ^v^
Answer:
Recycling saves energy by reducing or eliminating the need to make materials from scratch. ... By using recycled materials instead of pulling new natural resources, manufacturers can make the same products with less energy and expense.Explanation:I looked it up to bud
Tell me where I should put the boxes in the correct description
Answer:
1st graph/diagram --> 2nd description (between top and bottom)
2nd graph/diagram --> 3rd description (bottom/last one)
3rd graph/diagram --> 1st description (top one)
Need these answers quick please tha ks
Which prevention method is used for crown rot?
O Providing adequate soil drainage
O Pruning leaves
O Destroying plant debris
O Irrigating soil regularly
Which of the following are functions of
enzymes?
Answer:
The function of an enzyme is to speed up a chemical reaction in a living thing (humans, animals, plants etc.)
Help me, it's due today
When carbon dioxide is dissolved in the ocean, what can it be turned into?
A. Fossil fuels
B. Seashells
C. Nitrates
D. Zooplankton
I think its B. seashells?
Explanation:
Organisms in the ocean take Carbon Dioxide and turn it into carbonate CO 2/3
Carbonate is often combined with ions like CA 2+ and MG 2+
The Calcium Carbonate makes up the hard structures of corals, and sea shells. The amount of Carbon in the Coral reefs far exceeds the amount of Carbon Dioxide dissolved in the oceans.
Just like you and me, bacteria cells are under constant attack by
A. antiseptics
B. white blood cells
C. viruses
D. all the above
Answer:
C. Viruses
Explanation:
Help me please!
Cystic Fribrosis...
.
Answer:
50%
Explanation:
since f is the cystic fibrosis allele, it would present itself in a carrier as Ff.
2 out of the 4 possible offsprings are thus carriers hence 2/4×100=50%
A 7th grade teacher asked students to engage in an argument regarding human impact on a national forest ecosystem that was home to mountain lions, coyotes,
and bobcats as well as about 3,000 deer. The deer ate grass, and the mountain lions, coyotes, and bobcats ate deer. Hunters began killing
large numbers of
mountain lions, coyotes, and bobcats. About 20 years later the deer population had increased to about 100,000. The teacher asked the students to explain why
the population of deer increased. Which student's argument most accurately explains the increase in the deer population?
O A. Student 1: The number of deer increased because deer populations are always increasing, even when there are lions, coyotes, and bobcats preying on
them.
O B. Student 2: The number of deer increased because without lions, coyotes, and bobcats, the deer lived longer and had more offspring that also lived
longer.
c. Student 3: The number of deer increased because with fewer mountain lions, coyotes, and bobcats, the deer had more food available to eat
D. Student 4: The deer population increased because with fewer lions, coyotes, and bobcats, there was less competition within the deer population.
Answer:Student 4
Explanation: Because if the mountain lions, coyotes, and bobcats decrease they arent enough to prey on the deer which causes the deer population to be able to reproduce over time.
Earth's early atmosphere was primarily composed of
hyrogen cyanide and carbon monoxide.
oxygen and carbon monoxide.
oxygen and water vapor.
carbon dioxide, water vapor and nitrogen.
Answer:
The correct answer is ''carbon dioxide, water vapor and nitrogen.''
Explanation:
About 4.5 billion years ago, Earth was a very geologically active planet. So many volcanic fumes formed the primitive atmosphere, which was mostly made up of water vapor, carbon dioxide, sulfur, and nitrogen. At this point, oxygen was barely present and the oceans did not yet exist. The primitive atmosphere is the one before the Precambrian, it was reductive, that is, it lacked free oxygen, and only had ammonia, methane and hydrogen, the high temperature of the atmosphere in its early stages facilitated the reaction of these gases to form organic compounds from which life may have emerged. UV rays passed, because ozone did not exist.
Environmental Science Final Exam
Spring 2021
1.
Which of the following would be a density-independent cause of large numbers of deaths in a
population?
a. Disease-carrying beetles
b. Food shortages
C. Hurricanes
d. Predatory birds
2. How many species of organisms exist on Farth?
How would the Earth's climate change if its obliquity shifted from 23.4° to 0°, and all other factors remained the same?
A-Global warming would increase rapidly.
B-It would shift the Earth into a global ice age.
C-The seasonal changes would be more extreme.
D-There would be no seasons.
Answer:
There would be no seasons.
Explanation:
The tilt of the Earth's axis is what causes seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere. If there was no tilt, the rays hitting the Earth would have minimal changes, meaning no seasons.
Help me please!!! Past due! Worth 20 points I will mark you brainless too!
Instructions; fill in the boxes for density calculations, phase changes, phase/ states of matter
Answer: i am not sure
Explanation:
A population of large predators in an ecosystem has been trapped and removed from the area. How would this event most likely change the food web in this ecosystem?
A.
The number of herbivores will decrease and the number of producers will increase.
B.
The number of herbivores will increase and the number of producers will decrease.
C.
The number of small predators will decrease and the number of herbivores will increase.
D.
The number of small predators will decrease and the number of omnivores will decrease.
Select the correct answer.
Leo is at his son's birthday party. During the party, he keeps responding to unimportant work-related emails and can barely enjoy the party. This
makes his son very upset. What could Leo have done right so that his son would be happy?
OA buying his son an expensive gift
OB. being actively present at the party
OC. promising to throw another party
OD. quitting his job
Answer:
being actively present at the party
Answer:
being actively present at the party and celebrating with his son instead of responding to emails that are not very important
(Hurry, l am taking my exam) In an effort to develop the best-tasting apple, a grower eliminated all trees that produced apples considered too sweet or too sour. What type of selection is being carried out by the grower? a. Directional b. Disruptive c. Choice d. Stabilizing
Answer: It is D. Stabalizing
Explanation:
I took the test and because the apples of both ends are being eliminated while the ones in the middle are being kept and increasing.
What are Sodium carbonate.Na2 CO3. Elements
Answer:There are 3 elements in sodium carbonate i. e. sodium(Na) , Carbon (C) , Oxygen (O) .
Explanation:
Help me on this plz get this correct
Answer:
1. Eagle
2. Primary
3. The population of snails would go up
4. The same amount i believe
5. The Mitochondria
What is the difference between asexual and sexual with plants??
I WILL GIVE BRAINIEST IF CORRECT.
Answer:
see below hope this helps !
Explanation:
Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent.
Sexual reproduction involves two parents and produces offspring that are genetically unique.
Answer:
asexual plants are plants that can reproduce without another specimen and have hosts that carry pollen or whatever needed to reproduce and sexual plants need another plant to reproduce
Explanation:
:) hope this helps <3
Which option identifies the information that could best help the grower complete the estimate of harvest date in the following scenario?
Burt is grower and must make the arrangements for harvesting and shipping a crop weeks before the plants can reach maturity. He must make an estimate of likely maturity date based on known and predicted information. Burt knows the base temperature of the crop, the specific daily GDD units of the season to date, and the total GDD necessary before the plants can be ready for harvest.
ten-day weather forecast from a website
full-year weather forecast from an almanac
average daily highs and lows for the upcoming months
estimated number of days from planting to maturity
Answer: full-year weather forecast from an almanac
Hope this helps!!
Plz give me Brainliest!!
Have a great day!!
Bye!!
Answer:
average daily highs and lows for the upcoming months
Explanation:
did it and just got it right
What is nuclear fission?
O A. The joining of nuclei
B. The gain of nuclear mass
O C. The splitting of a nucleus
O D. The formation of an ion
Explanation:
C is the correct answer i.e. splitting of a nucleus
The splitting of a nucleus is known as the nuclear fission. So option C is correct.
Nuclear fission is the process of splitting an atom’s nucleus into lighter nuclei. This can occur naturally through radioactive decay, or it can be simulated in a laboratory by achieving the necessary conditions (e.g. neutrinos being bombarded). The resulting fragments usually have a mass that is less than that of the original nucleus.
We use the fission reaction in nuclear reactors to create electricity. The heat generated by the fission reaction is converted into a working fluid that passes through a steam turbine. The working fluid then drives a ship's propellers or turns the shafts of electrical generators.
To learn more about nuclear fission, refer to the link:
https://brainly.com/question/913303
#SPJ7
Which of these is not a characteristic of ALL living organisms?
A. Reproduces sexually
B. Is made of cells
C. Grow
D. Requires energy
How do laws reduce air pollution?
Answer:
Laws reduce air pollution by a number of things, this could be by issuing a fine of about £20 or above. This is the most common way yet im sure in more serious cases prison sentences are issued.
10 points for each answer brainliest as well
Based on the Nebular theory, which of these is a step in the formation of the center of a new planetary system?
A. evaporation of condensed gases due to heat
B. combination of condensed gases due to gravity
C. contraction of condensed gases due to nuclear fission
D. expansion of condensed gases due to nuclear fission
Answer:
The answer is the evaporation of water. As the gas begins to collapse, thermonuclear fusion as a result of the immense gravity at the center of the cloud results in the generation of immense heat and radiation that turns solids and liquid into gaseous form, close to the center of the cloud.
Explanation:
This resulted in the nuclear fusion of gases and dust to create the sun and planets at the outer flattened portion of the disk." The sun forms in the center of the cloud since the gravitation effect that drives thermonuclear fusion are strongest in this region. Planets form in the outer regions of the accretion disks where matter attract each other into clumps and gain even more gravitational pull to yank even more matter.
Hope this helps.
Answer:
A: evaporation of condensed gases due to heat.
Explanation:
Here are the 6 steps:
Nebula, protosun forming, spinning planetary disk, protoplanets forming,
Shock waves from a nearby supernova explosion.
It also begins to flatten.
Protosun.
When the gravitational forces begin to fuse hydrogen into helium (fusion)
Protoplanets.
Inner protoplanets - most of their lightweight gases are boiled away
The last step is the answer.
Certain individual females in a population of deer decide to stop breeding with males that don't have antlers. this is an example of which Form of speciation
A. Allopatric speciation
B. Sympatric speciation
C. Parasympathetic speciation
Certain individual females in a population of deer decide to stop breeding with males that don't have antlers. This is an example of which Form of speciation A. Allopatric speciation.
What's an allopatric speciation instance?
Allopatric speciation occurs when two companies of organisms are separated by using a bodily or geographic barrier. Not unusual examples of those boundaries include mountain degrees, oceans, or even big rivers. The isthmus of Panama is a high instance of a geographical barrier and it separates the Atlantic and Pacific oceans.
In allopatric speciation, groups from an ancestral populace evolve into separate species due to a period of geographical separation. In sympatric speciation, agencies from the same ancestral populace evolve into separate species with no geographical separation.
Allopatry, which means 'in another area', describes a population or species this is bodily remoted from different comparable companies by an extrinsic barrier to dispersal. From a biogeographic angle, allopatric species or populations are those that do not have overlapping geographic levels.
Learn more about Allopatric speciation here: https://brainly.com/question/12387377
#SPJ2
Answer:
Its B
Explanation:
Sympatric speciation