Answer:
21 million years
Explanation:
Which of the following facts about genes is incorrect?
A.A gene can code for a specific protein
B.A gene can exist in alternate forms called alleles
C.A gene undergoes crossing over during meiosis and can switch chromsomes
D.A gene that is very similar in sequence in a human and in a bacterium is probably a recent mutation.
E.If parents do not express a gene but their child does, that gene is probably recessive.
Why do you think it is illegal (in most places) to have an abortion AFTER 12 weeks?
Answer:
Because God Said So
Explanation:
#JesusDoesn'tCareThough
Answer:
The embryo begins to develop further and at some point, will become a fetus (an organism that is able to survive without needing the mother.)
Explanation:
Before the first trimester, the embryo is not a living, breathing organism and doesn't have a biological sex yet. It cannot survive on its own, so it is therefore part of the mother.
Which of the following is a beneficial micronutrient that may be found in commercial fertilizers?
sodium chloride
chlorine
potash
quartz
Will mark brainliest and give 15 points
Explanation:
Solar eclipse
-The moon is in-between the earth and sun.
-only lasts for a few minutes.
Lunar eclipse
-The earth is in-between the sun and moon.
-can last up too an hour
Hope this helps!!
ASAP due today
Explain one challenge we face using nuclear energy.
Answer:
The major challenges facing the nuclear industry include ensuring power plant safety, protecting reactors from natural disasters and external aggression, and finding effective solutions for long-term waste management.
Explanation:
Answer:
The major challenges facing the nuclear industry include ensuring power plant safety, protecting reactors from natural disasters and external aggression, and finding effective solutions for long-term waste management.
Have a nice day!
Using the diagram below, answer the following questions:
- True or False. The arrow labeled C represents a transfer of chemical energy to mechanical energy. Explain why this is true or false.
- True or False. The arrow labeled A represents a transfer of solar energy to chemical energy. Explain why this is true or false.
- Which arrow or arrows represent a release of carbon dioxide? What process is occurring at the arrow(s) you selected?
- Which arrow or arrows indicate a process that cycles carbon from living or nonliving organisms? Describe the process or processes you selected.
- Which arrow or arrows represent reactions that demonstrate a conservation of mass and energy? Explain your answer.
Answer:
FALSE. The factory uses mechanical energy and when carbon is released into the atmosphere it is the process of chemical energy. ... Arrows C + F represent a release of carbon dioxide. Arrow C shows carbon being released into the air from the factory.Its true because the arrow letter A uses the of solar power from the sun then makes a chemical reaction to make food for the plant so basically photosynthesis. 8.arrow E represents cycling of carbon from living organisms to non-living organisms. this is because it is showing conversion of a carbon from the dead tree to fossil fuel.All the arrows in a combined form are used to show the biogeochemical cycle or the carbon cycle. In this cycle, carbon is cycled between the biotic and abiotic component of the biome. In any biogeochemical cycle, mas and energy are always conserved.Most populations do not experience: ____ va) exponential growth b) Linear growth c) Resources d) Competition
Answer:
Most populations do not experience: a) exponential growth
Explanation:
Populations that experience exponential growth models show an increase in proportion to their size. The increase in the population size depends on the individual´s reproduction rate: a population that grows at constant exponential rate gains individuals faster as the population increases in size.
This model states that populations live in an environment with unlimited resource availability, so the density factor does not influence population growth. There is no density-dependence effect nor competition for resources. Natality and mortality rate do not depend on density. There is a constant growth rate per capita, and it is proportional to the population size.
Exponential growth is hardly seen in nature due to its characteristics.
Almost every environment shows a carrying capacity point. Carrying capacity is the capability of the environment to support a population. Commonly environments have limited resources and space, and as the population grows, competition increases too. The per capita growth rate decreases as population size increases. Finally, the population reaches the maximum point of carrying capacity, delimited by available resources, such as food or space.
The carrying capacity might be affected by limiting factors, which might be a result of the population density (for example, competition) or might be density-independent. This last case refers to dense-independent factors, and among these, we can mention human impact or natural disasters (fires, volcanic eruption, flooding).
Only a few species can experience exponential growth, such as bacterias.
The body produces extra white blood cells after it has eliminated an invading organism. What
term is used to describe these "extra" cells?
What was the variable in Redi's experiment?
a swan neck flask that prevented air from getting in
a straight neck flask to allow air to get in
meat sealed in jars that didn’t have contact with air
uncovered meat that had contact with air
Answer:
meat sealed in jars that didn’t have contact with air
Explanation:
Answer:
The last one is the correct answer.
Explanation:
What organelles help make and transport proteins and other macromolecules?
HELP PLS :)
It's hard to believe that forces and energies in space have an impact of events here on Earth. Scientists believe that the Sun is a huge influence on our planet. They have evidence to support their theories.
Can you pick out the statements that are true; statements that support the influence of the Sun on the Earth?
Spring tides are the largest tides due to the combined influence of the Sun and the Moon.
The sunspot cycle results in ice ages on Earth.
Solar flares disturb some radio communications here on Earth.
Geomagnetic storms on the Sun can damage to Earth-orbiting satellites.
The Sun's gravity is responsible for the planets' orbital path.
Answer:
the third one as I studied and knew.
Which of the following conditions result in the highest rate of transpiration?
A warm, windy and dry
B warm, windy and wet
C cold, windy and dry
D warm, still and wet
Answer:
the answer is A
Why should you not exercise right after a meal? Select all that Apply
your muscles need oxygen
the body cannot supply enough blood to both digestive system and muscles
because your lungs don't function as well
the arteries to the stomach are open wide
the arteries to the leg are open wide
Answer:
(b) The body cannot supply enough blood to both the digestive system and muscles. (d) the arteries to the leg are open wide.
Explanation:
You shouldn't exercise right after eating a large meal, as you may feel bloating or muscle cramping. It's better to eat low-fiber, low-fat, and high-carbohydrate snacks 30 to 45 minutes before exercising. This can include yogurt, fruit, granola, peanut butter, or whole-wheat toast.
The diagram below shows a model of the movement of two tectonic plates. When the plates collide, one plate often moves below the other plate. The rising magma that can result from this type of plate movement may produce -
fossil layers
volcanic islands
deep- sea sediment
seafloor spreading
Answer:
volcanic islands
Explanation:
As per the diagram given below that shows the model of the plate tectonics and shows the movement of the two plates one plate collides with another and the there moves under due to subduction.
The magma rises and can lead to the formation of volcanic islands. The island is a geologically active part of the plate that rises upwards and is formed by the process of sedimentation.Hence the option B is correct.
Learn more about the shows a model of the movement of two.
brainly.com/question/22661755Fill in the concept map below:
A is the Bacteria Domain
B is the Eukarya Domain.
the kingdoms are Archaebacteria (ancient bacteria)
Eubacteria (true bacteria)
Protista
Fungi
Plantae
Animalia
How are fossil fuels taken from earth?
Answer:Extracting fossil fuels. There are two main methods for removing fossil fuels from the ground: mining and drilling. Mining is used to extract solid fossil fuels, such as coal, by digging, scraping, or otherwise exposing buried resources.
Explanation:
This is the chemical equation for photosynthesis: 6CO2 + 6H2O → C6H12O6 + 6O2 True False
Answer:
False
Explanation:
The equation is 6CO2 + 6H2O → C6H12O6 + 6O2.
Hope this helps!
What are the three types of isolating mechanism that favor reproductive isolation and speciation?
The production of egg and sperm cells follows a certain sequence of events.
Which example lists those events in the correct order?
fertilization, meiosis, cell differentiation
meiosis, cell differentiation, mature gametes
sexual reproduction, cell differentiation, mitosis
cell differentiation, meiosis, sexual reproduction
In 1980, the __________ was passed to identify hazardous wastes and their life cycles.
A)
National Environmental Policy Act (NEPA)
B)
Resource Conservation and Recovery Act (RCRA)
C)
Integrated Waste Management ACT (IWMA)
D)
Americal Recovery and Reinvestment Act (ARRA)
E)
Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA)
Answer:
E
Explanation:
Right on Edg
Answer:
e.) CERCLA
Explanation:
CERCLA was passed in 1980 as a way to begin developing practices to handle and clean up hazardous wastes.
Explain how a concentration gradient, a membrane protein, and hydrogen ions work together to provide a mithochondrion with energy.
Answer:
Mitochondria within the electronic transport chain, are responsible for producing the energy that the cell needs, adjusting its operation to meet the metabolic needs of the body.The mitochondrion is the place where oxygen is consumed from aerobic organisms through various electron carriers and proton translocators (H +).
Explanation:
The lipid matrix of the membrane provides an impermeable barrier to ion translocation, as well as a topological organization to the catalysts in the membrane matrix that allows them to transport both e- and ions within and across the membrane in vector form. The transformation of oxidative energy into other forms of energy is carried out, initially, by generating a transmembrane electrochemical potential difference of H + ions (protomotive force). This force is the product of the asymmetric distribution of H + on both sides of the membrane, as those are translocated through it by the enzymatic complexes of the respiratory chain.The protomotive force is made up of two closely related components: one, function of the difference in chemical concentration of hydrogens across the membrane (a pH gradient) and another, dependent on the difference in electrical charge of H + ions on both sides of it (an electrical potential gradient). Gradients of electrical charge and chemical potential produce a field in which a force is exerted that tends to attract previously expelled protons into the mitochondria. It is the enzymatic complex of ATPase, the means by which the thermodynamically reversible translocation of H + ions is catalyzed. At the same time, the chemical activity of the H + on both sides of the membrane causes a change in the equilibrium constant of the enzyme, inducing it to catalyze the synthesis of ATP.
HELP!!!! 50PTS!!!!!!
When some organic molecules, such as lipids, are added to water, vesicles can form. Which of the following best describes how scientists hypothesize true cells evolved from vesicles? (3 points)
Vesicles became enclosed by a membrane, thus becoming organelles for larger cells.
Vesicles containing amino acids fused to form nucleotides, RNA, and DNA.
Vesicles surrounded organic compounds and catalyzed reactions to form macromolecules.
Vesicles that contained self-replicating RNA grew, split, and passed their RNA to daughters.
Answer:
DNA can store genetic information and most likely appeared before RNA.
Explanation:
Answer:
Vesicles that contained self-replicating RNA grew, split, and passed their RNA to daughters.
Explanation:
RNA played role in protein synthesis and also created its own catalyst.
I really need this ASAP! Thank you!
Answer:
1) 50% and 50%
2)87.5% and 12.5%
Explanation:
An ATP molecule is made up of 1 ribose molecule, 1 adenine molecule, and 3 phosphate groups joined.
What does the prefix tri- in phosphate mean
Answer:
Tri means three.
Explanation:
The prefix tri means three phosphate molecules are present in in molecule of ATP. ATP molecule is used by the living organisms for performing different activities such as movement, running and breathing etc. When the energy is needed the break down of ATP occurs in which ATP is converted into ADP and phosphate ion, this phosphate ion is used as energy whereas when there is food available this ADP is again converted into ATP.
Which statement best describes why invasive species often thrive in foreign lands?
a. They always have more food to eat in the new habitat.
b They are free from the predators of their native habitats.
с They are transported by humans.
d The climate is always better in the new habitat.
Answer:
They are free from the predators of their native habitats.
Explanation:
A student keeps an onion bulb in a jar filled with water and observes that the roots continue to grow in length. The student cuts a root tip and observes it under a microscope. The image shows the observations. Which option supports the reason for an increase in the root’s length?The root cells undergo meiosis to expand and increase in length.
The root cells undergo mitosis to combine together to make the root grow.
The root cells undergo mitosis to form new identical cells.
The root cells undergo meiosis to form different types of cells.
Answer:
The root cells undergo mitosis to form new identical cells.
Explanation:
Mitosis is the process of cell division, where a cell divides into two equal cells with the same number of chromosomes. These new cells are used to promote the growth of a biological structure, promoting an elongation, a replacement, a concert, or an increase in volume. This can be seen in the case of the growth of the tip of the onion root, where the cells underwent mitosis, forming equal cells, to promote the growth of a new tip.
*
Which example is NOT an outcome of the ecosystem modifying a phenotype?
A.the changing of the color of an animal's fur as the temperature changes
B.the increased intelligence of a person who attended school for many years
C.the pink-flowered snapdragons that result from crosses between red-flowered and
white-flowered snapdragon plants
D.the very short stature of a kind of tree that grows at a high altitude in comparison with
the same kind of tree growing at a lower altitude
Answer:
The pink-flowered snapdragons that result from crosses between red-flowered and white-flowered snapdragon plants
Explanation:
What is stored energy?
What is an example of a learned behavioral adaptation?
O camouflage
O hunting
O hibernation
O migration
Answer:
Hunting
Explanation:
Camouflage is a hereditary physical aspect, whereas hibernation and migration are instinctual. Hunting is a learned behavior as it is not as ingrained as the other two and is not automatically done.
P.S. at first I read the answer choices to the tune of "O, christmas tree"
The most amount of energy is available at what level of an energy pyramid?