study suggests that photosynthetic eukaryotes may have emerged around 1.9 billion years ago in freshwater habitats. Eukaryotes are thought to have evolved the capacity for photosynthesis through a process called endosymbiosis, in which a protist host encapsulated a photosynthetic cyanobacterium.
Segment of chromosome is placed in the reverse order.
Translocation
Duplication
Deletion
Inversion
Answer: Inversion
Explanation:
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A student drew the model below to represent a part of a watershed and some human activities that afect the watershed how do the industrial agricultural and residential activities of humans most likely affect the groundwater in the area
Answer:The answer is B bro
Explanation:
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Answer:
I'm not sure about the answers of the others, so i didn't include them. But all other answers are in the image
What is the purpose of the human genome?
Answer:
I hope it helps u
Explanation:
The Human Genome Project was an international research project that sequenced all of the genes found in humans. This ambitious project began in 1990 and concluded in 2003. One goal of the project was to accurately sequence the 3 billion nucleotide base pairs in the human genome.
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Which of the following is a desirable trait of vermiculite?
heavy weight
good drainage
water-retentive
o high nutrient value
Answer:
i got u
Explanation:
it's water-retentive. Vermiculite is really good at absorbing water
Which is more harmful to otters and other animals, trapping or pollution /habitat destruction ?
Answer:
habitat destruction
Explanation:
it would be hard for them to be able to make another habitat all over again after all of the hard work that was put in to it but yet again trapping and taking away the animal from their family is very hard to
PLSSS HELP GIVING BRAINLIEST
Which two phrases best summarize the events taking place in Step 2? O A. Cellular respiration OB. Releasing carbon dioxide into the atmosphere O C. Storing carbon dioxide in living organisms O D. Photosynthesis
Answer:
A and B are your answers
Explanation:
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a, b, c, or d?
Answer:
A. ECOLOGICAL FOOTPRINT
Explanation:
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Answer:
Multicolor is an example of a PHENOTYPE
Explanation:
You can physically SEE that Sulli has multi-colored fur. Phenotypes refer to characteristics that you can observe.
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Answer:
C
Explanation:
because the place will run out off resources
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Why are the algae that live on snow able to survive high in the Mountains in early summer?
Answer:
The spores usually have thick walls and large amounts of lipid reserves, polyols and sugars. These spores are able to withstand sub-zero temperatures in winter and also high soil temperatures and desiccation in summer which would kill normal vegetative cells.
Explanation:
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Which increases speciation?
O A. Geographic isolation
O B. Lack of mutations
C. Asexual reproduction
O D. No predators
Answer: A.
Explanation: Scientists think that geographic isolation is a common way for the process of speciation to begin: rivers change course, mountains rise, continents drift, organisms migrate, and what was once a continuous population is divided into two or more smaller populations.
Answer:
A
Explanation:
Geographic isolation is a crucial component in speciation. If gene flow is disrupted for an extended period of time due to the geographical obstacles, populations can develop separately and eventually form different species.
List 2 out of the four types of Chromosomal mutations
Answer:
Explanation:
Types of Mutations. There are a variety of types of mutations. ...
Chromosomal Alterations. Chromosomal alterations are mutations that change chromosome structure. ...
Point Mutations. A point mutation is a change in a single nucleotide in DNA.
A simplified carbon cycle is depicted here. The release of carbon dioxide into the atmosphere can contribute to global warming.
Which statements describe the processes of forest fires, fossil fuel combustion, and plant respiration? Select ALL that apply.
A)
They occur under anaerobic conditions primarily.
B)
They are all directly caused by human intervention
They are primarily the result of microbial activity.
Eliminate
D)
They all occur in the presence of oxygen to release carbon dioxide.
E)
They each convert organic carbon-based molecules into carbon dioxide.
Answer:
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A simplified carbon cycle is depicted here. The release of carbon dioxide into the atmosphere can contribute to global warming. The statements describe the processes of forest fires, fossil fuel combustion, and plant respiration are they occur under anaerobic conditions primarily, they are all directly caused by human intervention, and they are primarily the result of microbial activity. Thus, option A, B, and C are correct.
What is carbon dating?Carbon dating or radiocarbon dating has been known as the method to identify the age of any substance by using the properties of radiocarbon. The method has been developed in late 1940 at university of Chicago.
Carbon dating has been the process by which we can find the extrapolated data which stored by tree rings can be identified which thousands year old.
Carbon has been known as the one of the chemical elements. Along with hydrogen, nitrogen, oxygen phosphorus and sulfur carbon has a building block of biochemical molecule ranging from fats, proteins and carbohydrates.
Therefore, A simplified carbon cycle is depicted here. The release of carbon dioxide into the atmosphere can contribute to global warming. The statements describe the processes of forest fires, fossil fuel combustion, and plant respiration are they occur under anaerobic conditions primarily, they are all directly caused by human intervention, and they are primarily the result of microbial activity. Thus, option A, B, and C are correct.
Learn more about carbon on:
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What genotypes are observed when you cross a Dd parent
with another Dd parent?
a. 100% DD
b. 75% DD and 25% dd
c. 50% DD and 50% dd
d. 25% DD, 50% Dd, 25% dd
Answer:
it is D. 25%DD ,50%Dd ,25%dd
If both the parents are heterozygous (Dd), the resulting offspring are 25%DD, 50%Dd, and 25%dd. So, the correct option is D.
What do you mean by genotypes?Genotypes may be defined as the ultimate combination of alleles of those genes which are selected for our study.
Here, both the parents carry the genotype Dd, when Dd is crossed with Dd, the resulting offspring are 1DD, 2Dd, and 1dd.
Therefore, if both the parents are heterozygous (Dd), the resulting offspring are 25%DD, 50%Dd, and 25%dd.
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If (A) is the allele for brown hair and (a) is the allele for blond hair, how many children will have brown hair? 25% 50% 75% 100%
Answer: 100 because A is dominant
Explanation:
Explanation:
is it AA and aa
or Aa and aa
Why do scientists study Rock layers?
Explanation:
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Which of the following correctly describes how water interacts with Earth's land? Select all that apply.
A. Water moves in the oceans as part of surface and deep currents
B. Water moves below the ground as a result of aquifers and infiltration.
C. Water moves above the ground as a result of streams and runoff.
D. Water moves as wind blows clouds through the sky.
E. Water moves as runoff from clouds to the ground.
The study of how living things interect with each other and with their enviroment ?
Answer:
I think Ecology is the study of how living things interact with each other and their environment. This includes living things (biotic factors) and non-living things (abiotic factors).
Hope this help you!:)
15 POINTS AND BRAINLY FOR 1 MULTP. CHOICE QUESTION
A virus is a _____. A) intracellular parasite B) consumer C) Host D) Producer
Answer:
A
Explanation:
What is Crossing over
Answer:
Crossing over is the swapping of genetic material that occurs in the germ line. During the formation of egg and sperm cells, also known as meiosis, paired chromosomes from each parent align so that similar DNA sequences from the paired chromosomes cross over one another.
Explanation:
Answer: Crossing over is the swapping of genetic material that occurs in the germ line. During the formation of egg and sperm cells, also known as meiosis, paired chromosomes from each parent align so that similar DNA sequences from the paired chromosomes cross over one another.
Explanation:
HELP ME RIGHT KNOW PLEASE! ASAP what are 2 simular or different experinments related to invasive seaweed
Answer:
hope it helps:)
Explanation:
Invasive carp are fast-growing, aggressive, and adaptable fish that are outcompeting native fish species for food and habitat in much of the mid-section of the United States. ...
Brown Marmorated Stink Bug. ...
Answer:
When it comes to finding protection and a safe feeding ground, fish rely on towering blades of seaweed, like kelp, to create a three-dimensional hiding space. Kelp forests have been shown to be one of the most productive systems in the ocean with high biodiversity and ecological function. However, in recent decades, many kelp habitats have been taken over and replaced by lower turf-dominated seaweed species.
Researchers at the University of New Hampshire have found that this change in the seascape may impact the behavior of fish and could be leaving them less options for refuge and more vulnerable to predators.
"In each case, the cunner preferred and sought out the kelp, or similar seaweed species, to hide in," said Jennifer Dijkstra, research assistant professor in the Center for Coastal and Ocean Mapping at UNH. "Over and over, they gravitated to the kelp that is taller and because of its blade-like structure, provides a canopy to hide under."
Three experiments were conducted as part of the research recently published in the Journal of Experimental Marine Biology and Ecology; in situ video observations, a refuge choice study, and a foraging efficiency study. The video of cunner, a residential mid-trophic level fish, in their habitat showed that the fish preferred the kelp almost three times as much. The refuge choice experiment, where different seaweed scenarios were created for them to hide, supported the video observations that in all cases, kelp was the refuge of choice. The foraging efficient study showed very little difference between seaweed habitats.
"Our results suggest that the refuge-seeking behavior of the cunner may be impacted by the ongoing shift we have seen in our earlier studies of the increased dominance of the Dasysiphonia japonica (invasive seaweed) in the southern Gulf of Maine," said Dijkstra. "By losing their preferred refuge, the tall canopy-forming kelps, cunner were left with little option but to use the lower invasive seaweed turfs, which could give them less protection."
Three species known to be predators of cunner -- striped bass, pollock, and harbor seals -- were seen on the video highlighting the real threat to cunner in the surveyed habitats. Researchers say while this study did not directly measure predation, they believe that cunner may become more vulnerable prey since they were easily seen by the researchers hiding in the lower, less dense seaweed. Researchers also note this could be even more detrimental to juvenile cunner who look for safe refuge more often. While further studies are needed, they caution that continued reduction in available kelp cover may signal the beginning of density-dependent mortality in cunner populations which may have cascading effects on other members of the Gulf of Maine ecosystem.
Dijkstra and her team previously published a study that looked at seaweed populations over the last 30 years in the Southwestern Gulf of Maine and found the once predominant and towering kelp seaweed beds are declining and more invasive shrub-like species have taken their place. The invasive fiber-like red seaweeds had covered up to 50 to 60 percent of some areas, altering the look of the ocean floor and the base of the marine food chain.
Explanation:
what is the order of magnitude of the DNA?
The Intergovernmental Panel on Climate Change has concluded that greenhouse gases released into the atmosphere, due to human activities, have affected Earth's climate. Which of the following statements best explains the connection between rising atmospheric concentrations of greenhouse gases and the effects of climate change on ecosystems?
A.
Higher levels of methane have caused increased global precipitation.
B.
Higher levels of carbon dioxide have caused a reduction in ocean pH.
C.
Higher levels of methane have caused algal blooms in lakes and streams.
D.
Higher levels of carbon dioxide have caused an increase in global photosynthesis.
Answer:
D.Explanation:
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What effect does the heating of Earth have on air and water movement?
Answer:
Solar heating of the Earth's surface is uneven because land heats faster than water, and this causes air to warm, expand and rise over land while it cools and sinks over the cooler water surfaces.
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What do the Roman numerals on the side of a pedigree mean?
a the level of organism
b the generation
c the number of siblings
d how many individuals carry a specific trait
Answer:
B, the generation.
Photosynthesis takes place in leaves. Leaves contain that allow for the exchange of gases during the process, and also help with the process of .
Answer:
The correct answer is - stomata, transpiration.
Explanation:
Photosynthesis is the process that uses light to convert CO2 and water to produce sugar and oxygen. The carbon dioxide is taken up by the little holes-like structures present on the spongy layer of the leaves called stomata. These structures are used for gaseous exchange, taken up oxygen, and releasing oxygen.
Stomata also help in releasing water vapors from the aerial parts during the process of transpiration to prevent the plants to burn in a dry environment and wind.
How does the presence of mountains affect an area’s climate?
Explanation:
Mountains can have a significant effect on rainfall. When air reaches the mountains, it is forced to rise over this barrier. As the air moves up the windward side of a mountain, it cools, and the volume decreases. As a result, humidity increases and orographic clouds and precipitation can develop