Answers
Answer: B. It sped up evolutionary change by increasing genetic variation.
Explanation:
Evolution works when organisms with genes that are better suited to the environment pass on their genes to future generations.
Sexual reproduction sped up this process because it allowed for genetic variation as genes from the two mates would be passed on the next generation instead of one organism as had been the case with asexual production.
With genes from both mates mixing up and going into the next generation, more genetic variations were produced which allowed for the organisms to better adapt to the environment.
Related Questions
how to calculate average molarity
Answers
Answer:
To calculate the molarity of a solution, you divide the moles of solute by the volume of the solution expressed in liters.
Explanation:
The molarity (M) of a solution is the number of moles of solute dissolved in one liter of solution. To calculate the molarity of a solution, you divide the moles of solute by the volume of the solution expressed in liters.
can somebody please help me?
Answers
Answer:
100% of the offspring would be black fur, black eyes (16/16)
Explanation:
(Because the info. wasn't included here, I'm assuming black fur and black eyes are dominant, BBEE, to the recessive white fur and red eyes, bbee)
For BBEE x bbee, you'd create a typical dihybrid true-breeding punnett square , where the first top row would be BE , BE, BE , BE , and the vertical/side row would be be, be, be, be.
Cross these alleles as you would typically for any punnett square, and you'd see that all the offpsring would result in BbEe genotypes, which is true of any true-breeding dominant x recessive cross, which always results in the dominant phenotype being 100%.
So...
Black Fur and Black Eyes : 16/16 (100%)
Black Fur and Red Eyes: 0/16
White Fur and Black Eyes: 0/16
White Fur and Red Eyes: 0/16
Help 7 grade science
Answers
Answer:
rotifer
Explanation:
An omnivore feeds on both plants and animals. I'm this food web the rotifer is eaten by the copopod. The copepod feeds on golden algae (plant) and rotifer (animal), which makes it an omnivore. As such, the correct answer is rotifer because it is feed on by the omnivore, copepod.
g Neuron A and neuron B interact with neuron C. Neuron A will produce an IPSP of -2mV in neuron C; neuron B produce an EPSP of 3mV in neuron C. The resting membrane potential is -70mV and the threshold is -50mV. Neuron A fires 6 times rapidly at the same time that neuron B fires 4 times rapidly. What is the resulting membrane potential in neuron C
Answers
Answer:
-70 mV
Explanation:
Given that Neuron A and Neuron B interact with Neuron C
Neuron A produces ; - 2mV of IPSP and fires 6 times
Neuron B produces ; 3mV of EPSP and fires 4 times
Resting potential = - 70mV
threshold = - 50mV
The resulting membrane potential in neuron C
= -70 + 6(-2) + 4(3)
= -70 - 12 + 12 = -70 mV
The benefit of social behavior that refers to searching for and collecting food is referred to as .
Answers
Answer:
Ngl bro i like your pfp, its fire
Answer:
Foraging
Explanation:
You are a researcher interested in a rare, highly endangered bird species that lives in a very remote area of the Amazonian rainforest. Almost nothing is currently known about this species’ diet, behavior, life-span, breeding system, or its interactions with other species. Use your knowledge of the definition of ecology, the scales at which ecological research is conducted, and experimental design.
1. Which ecological level (or levels) would you focus on in your research? Justify why you would choose this level (or levels), and explain why you would not choose the others.
2. Would you use an observational, experimental, or modeling approach to study this rare bird species? Why would the approach you chose be a better choice than the others for your study?
Answers
Answer:
- Ecological levels to consider in this study: organism, population and community
- Approach: I would use an observational approach to study this bird species
Explanation:
The levels of the ecological organization include the organism, population, community, ecosystem, and biosphere (from simplest to most complex). In this exploratory study, it is imperative to consider: 1-morphological, physiological and behavioral adaptations of the bird species (i.e., organismal-level), 2- size/density/structure of the bird population (i.e., population-level), and 3-interactions between bird population and other populations (i.e., community-level). The higher ecological levels, i.e., ecosystem-level (relationships between the community and abiotic factors ) and biosphere-level (biosphere = planet Earth), can be in this case disregarded because this study is centered on a focus bird species. Moreover, it is expected to apply an observational strategy because nothing is currently known about the focus bird species. The experimental and modeling approaches seem more suitable to test a particular hypothesis being discussed (it is not the case for this study).
01:46:45
Which statement correctly describes a feature of the rock cycle?
O Rocks are preserved through the process.
O Rocks change from one type to another.
O Different rock groups are not related to one another.
O Rocks change from one type to another in a specific order.
Answers
Answer:
The correct description of a feature of the rock cycle is:
O Rocks change from one type to another.
Explanation:
Sedimentary, metamorphic, and igneous rocks are the three main rock types. Together, they form the universal rock cycle. A sedimentary rock, for example, can change from its known state to another state by passing through crystallization, metamorphism, erosion, and sedimentation. There are no specific orders for the change. The processes that they pass through determine the resulting type.
Answer:
Rocks change from one type to another.
Explanation:
What is Climate Change?
Explain your answer.
Answers
What is Climate Change?
Climate change is a change in the usual weather found in a place.
How it helps us:
Studying the climate helps us predict how much rain the next winter might bring, or how far sea levels will rise due to warmer sea temperatures. ... We can also see which regions are most likely to be affected by extreme weather, or which wildlife species are threatened by climate change.
How it works:
As the earth's atmosphere heats up, it collects, retains, and drops more water, changing weather patterns and making wet areas wetter and dry areas drier. Higher temperatures worsen and increase the frequency of many types of disasters, including storms, floods, heat waves, and droughts.
How it affects us:
Human health is vulnerable to climate change. The changing environment is expected to cause more heat stress, an increase in waterborne diseases, poor air quality, and diseases transmitted by insects and rodents. Extreme weather events can compound many of these health threats.
A diet that is mainly based on unrefined whole grain, fruits, vegetables, other plant products, though may contain small amounts of animal-derived foods,
can be called all of these except for which?
Select one:
a. Prudent diet
b. Healthy diet
C. Plant-based diet
D.Western diet
Answers
Answer:
Healthy diet
Explanation:
all of those have vitamins and they provide us energy
Answer:
b. healthy diet
Explanation:
Because vegetables , fruits and other plant products are vitamins.
4. Which was a stronger nuclear blast?
a. The Hiroshima "Little Boy" bomb, 15 kilotons
b. The Trinity test explosion, 21 kilotons
c. The Castle Bravo explosion, 15 megatons
d. The 100-ton test, 0.1 kilotons
Answers
Answer:
I think it would be the Castle bravo explosion
Explanation:
Castle bravo was about 1,000 times more powerful than each of the atomic bombs that were dropping Hiroshima and nakazaki during world war II and I'm guessing in megaton is stronger than killotons
What would make oppositely charged objects attract each other more?
increasing the positive charge of the positively charged object and increasing the negative charge of the
negatively charged object
decreasing the positive charge of the positively charged object and decreasing the negative charge of the
negatively charged object
increasing the distance between the positively charged object and the negatively charged object
maintaining the distance between the positively charged object and the negatively charged object
Answers
Answer:
A
Explanation:
Answer:
A, increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
Explanation:
EDGE 2021
According to the diagram how are the three components
of a nucleotide important to the structure of DNA?
Answers
Answer:
A nucleotide of DNA is made up of three parts: a nitrogenous base, a 5-carbon sugar, and a phosphate group. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine.
The phosphate group linked with deoxyribose sugar to make the framework for the nitrogenous bases. The phosphate group and sugar molecule make the DNA backbone and support it. These backbones hold nitrogenous bases and make a monomer of DNA. Nitrogenous bases make DNA stable and hold both backbones together. These bases also make DNA functional.
PLEASE HELP! Scientists performed studies on mussels and clams. They placed these different species in fresh water that had contaminants commonly found in agricultural runoff and human and animal waste. Within a few days, the mussels and clams had removed the majority of the contaminants. How do these findings relate to ecosystem services in natural environments?
A.
Introducing new species of mussels and clams will help reduce erosion and runoff into rivers.
B.
Increasing the biodiversity of mussels and clams in freshwater ecosystems will improve water quality.
C.
Growing mussels and clams in rivers will provide humans with a steady source of food.
D.
Using a single species of mussel or clam will remove greenhouse gasses from the atmosphere.
Answers
Answer:
b
Explanation:
biodiversity means increase value or increase the amount of mussels and clams in rivers to increase water quality
What is the term for the absolute worst type of inflation, where prices skyrocket out of control and a nation's economy becomes at risk of collapse?
Answers
Answer:
Hyperinflation is a term to describe rapid, excessive, and out-of-control general price increases in an economy.
Explanation:
How did Mendel solve the problem of always observing the same traits in his experiments?
Answers
what are the interactions between atoms that are hydrolyzed by fungi to release nitrogen from these molecules?
Answers
Factorise completely pq - q?
Answers
Explanation:
q(p-1) is the factorization of pq- q.
Which of the following is an abiotic factor in a biome
Answers
Answer: C
Explanation: Abiotic means non living so Wind, sunlight, soil, temperature, atmosphere, and water.
Describe early land plants
Answers
Answer:
The following seems to be a summarization of the topics.
Explanation:
Not too far from the rich water supply or water bodies can early soil vegetation or flora persist, is considered as early land plants.Throughout history, land organisms have different ways of surviving with rising drought, our rocky earthly environment is turned into such an environment of multilayered sediments as well as varied biotic organisms.
Can someone tell me if this is correct I need help with the percentage
Answers
Answer:
Hand = 75%
No hand = 25%
Explanation:
It's the same thing as last time. Since 3 of them are heterozygous and have 1 dominant allele, they have the dominant trait. And since one of them only has recessive alleles then it should have the recessive traits.
So the hand should have 75% and no hand has 25%.
( I saw someone else just post a link so I answered it in that question box, but it got deleted so i'm just writing it out here ig)
3) An astronomer observes four stars from two different locations on Earth. For which star will the
astronomer observe the greatest parallax?
the star that is 3.4 AU from Earth
the star that is 4.2 AU from Earth
the star that is 6.8 AU from Earth
the star that is 10.4 AU from Earth
Answers
Answer:
An astronomer observes four stars from two different locations on Earth. Will the astronomer observe the greater parallax for a star that is closer to Earth or farther from Earth? the greater parallax for a star that is closer from Earth.
Explanation:
i hope u read to found the answer
What did fungi diverge from?
Answers
Answer: In 1998 scientists discovered that fungi split from animals about 1.538 billion years ago, whereas plants split from animals about 1.547 billion years ago. This means fungi split from animals 9 million years after plants did, in which case fungi are actually more closely related to animals than to plants.
Have a great day.
Rinderpest (a virus) has high mortality in wildebeest (a kind of herbivore), especially in young animals. From the early 1960s, after the elimination of a virus called rinderpest, the wildebeest population has increased dramatically from 1958 to 1978. The elimination of rinderpest impacted the wildebeest population. What type of factor is rinderpest
Answers
Answer:
density-dependent, top-down factor
Explanation:
In biology, limiting factors are resources and other conditions in the environment whose presence/availability limit the population growth rate. Density-dependent factors refer to the conditions whose effects on the size/growth of the population vary depending on the population density. Some examples of density-dependent factors include diseases, competition, and predation, etc. These factors can exhibit a positive or negative correlation with the population size. Moreover, bottom-up population control (species limitation by resources) refers to limitations placed by resources allowing growth (e.g., food source or habitat), while top-down population control (limitation by enemies), refers to limitations placed by factors that control the death rate in the population (e.g., predation or diseases).
Alleles are represented by using letters. A dominant gene is
represented by what kinds of letters? Capital or small letters?
Answers
Answer:
Capital
- Refer to the basic theory in genetics.
the fertilization of ovules from plant Q by pollen from plant R results in the productions of seeds. What percent of the genes in each offspring's chloroplasts wioll have been inherited from plant R
Answers
Answer:
The correct answer is - zero or 0%.
Explanation:
The fertilization in flowering plants takes place by fusing the pollen of one plant or flower with the ovum of another plant or flower of the same species normally and form a zygote. The zygote gets an equal amount of genetic material from both parent plants by the process f exchange of the genetic material.
The ovum or the egg cell of the plant is considered as the mother and the mother is responsible for the chloroplast And mitochondria of the progeny so in this case, the ovum and egg cell comes from the only plant Q thus, the percentage of chloroplast genes provided via Plant R is 0%.
How is mitosis different in plants and animals?
Answers
In plants a new cell plate is formed between the daughter cells for the future cell wall, while in animal cells the cell membrane constricts to separates the parent cell into daughter cells
Answer:
The main difference is cell plate formation and how they form the daughter cells during cytokinesis. In plants, they lack centrosomes. A new cell plate will form between the daughter cells for the future cell wall. In animal cells the cell membrane will rather constrict to separates the parent cell into the daughter cells. Plants also do not undergo cell furrowing, unlike animals cells.
birth defects due to radiation are a concern also. why is a fetus especially at risk?
Answers
Of the babies that survive, however, few will have birth defects related to the exposure, regardless of how much radiation they were exposed to. Large radiation doses to the fetus during the more sensitive stages of development (between weeks 2 and 18 of pregnancy) can cause birth defects, especially to the brain.
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Given the size of the coquí, what is surprising about its call
Answers
Answer:
its the loud sound the males make at night.
Explanation:
the sound has two purposes the scream CO to repel males while KEE to find mates
What advantage does a reliable web page have over published textbooks and
encyclopedias?
A) It is easily updated with the most recent information.
B) All web pages are peer reviewed.
C)Anyone can publish information on a web page.
D) Textbooks and encyclopedias are always more accurate than web pages.
Answers
Bkwcbkwfbicefebdwbdhdhd
Answer:
A
Explanation:
because it is easily updated with recent information
How did the development of sexual reproduction affect evolutionary change?