Answer:
if the population is too high and food is scarce.
high population attract predators.
high competition for food.
mutations.
Answer:
A reduction over time in a region's population can be caused by sudden adverse events such as outbursts of infectious disease, famine, and war or by long-term trends, for example sub-replacement fertility, persistently low birth rates, high mortality rates, and continued emigration.
Eye color in fruit flies is sex linked, with the recessive allele causing white eyes. Show the cross for a white eyed female and a red-eyed male. How many offspring will have white eyes, and what is their sex?
Answer: half the offspring will be male andvonly males will have white eyes
Explanation:
White eyed female XrXr
red eyed male XRY
crosses XrXR, XrY
half the offspring, the males, will have white eyes
How many half lives has an isotope gone theough if it has 12.5% of the radioactive substance remaining
Answer:
15.81 years
Explanation:
Shelled protozoans become a part of _________________ layers
Yeast cells are what type of reproduction (sexual or asexual)? How do you know, be specific plz?
Answer:
Asexual reproduction
Explanation:
They reproduction through binary fission
CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION I WILL MARK YOU BRAINLIEST THANK YOU
Answer:
genetic engineering
Source: star trek
Answer:
genetic engineering also known as gmo
Explanation:
hope this helps
7. What are the reactants of the Krebs cycle? (select all that apply)
oxygen
glucose
FADH2
pyruvate
carbon dioxide
ATP
lactic acid
Answer:
co2 pyruvate atp fadh2
Explanation:
how much will atmospheric carbon change in one year
Answer:
in 1 year
854
in 10 years
890
in 100 years
1250
can u help me? guys alleast 1,2 question maybe
Answer:
1. Newton's second law states that the acceleration of an object is directly related to the net force and inversely related to its mass. Acceleration of an object depends on two things, force and mass.
2. Answer: why in a single fixed pulley the velocity ratio is always more than the mechanical advantage. ... Thus effort is able to lift less load than actual effort applied and hence mechanical advantage is less than
3. Total internal reflection, in physics, complete reflection of a ray of light within a medium such as water or glass from the surrounding surfaces back into the medium. The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle.
7. Mercury which is a metal but a liquid at room temperature. So it cannot be drawn into wires.
8. Hermaphroditic animals—mostly invertebrates such as worms, bryozoans (moss animals), trematodes (flukes), snails, slugs, and barnacles—are usually parasitic, slow-moving, or permanently attached to another animal or plant.
9. A bacteriophage is a type of virus that infects bacteria. In fact, the word "bacteriophage" literally means "bacteria eater," because bacteriophages destroy their host cells. All bacteriophages are composed of a nucleic acid molecule that is surrounded by a protein structure. A bacteriophage attaches itself to a susceptible bacterium and infects the host cell. Following infection, the bacteriophage hijacks the bacterium's cellular machinery to prevent it from producing bacterial components and instead forces the cell to produce viral components. Eventually, new bacteriophages assemble and burst out of the bacterium in a process called lysis. Bacteriophages occasionally remove a portion of their host cells' bacterial DNA during the infection process and then transfer this DNA into the genome of new host cells. This process is known as transduction.
Explanation:
Motor units that involve Type II fibers are typically activated via...
Smaller, slow conducting neurons
Larger, fast conducting neurons
Smaller, fast conducting neurons or
Larger, slow conducting neurons
Transcribe this dna : TATGCGAAA
Answer:
ATACGCTTT
Explanation:
DNA has the bases Adenine, Thymine, Guanine, and Cytosine
*Uracil is in RNA
This diagram is of an amniote egg.
What is the correct label for A in this diagram?
placenta
zygote
embryo
amnion
Answer:
amnion
Explanation:
Answer: amnion
Explanation: I took the test
Speculate whether Type I or III survivorship is more typical of early or late succession in ecosystems and which population age-structure (rapid growth or zero/negative growth) is more typical of early or late succession.
Answer:
On the basis of the given information:
Type I survivorship curves - high survival rate through most of life, large organism, long life span, slow development, and few protected progeny. Slower growing organisms are present and typically of late succession
Type III survivorship curves - juvenile mortality, but live for a long time, less parental care, smaller animal, early reproduction smaller body structure. In the early succession, this type of survivorship is more common.
Cytosine makes up 30% of the nucleotides in a sample of DNA from an organism. Approximately, what percentage of the nucleotides in this sample will be thymine?
Cytosine (C)
30%
Guanine (G)
Thymine (1)
?
Adenine (A)
Answer:
c
Explanation:
Help please!! BRAINLIEST AND 10 POINTS!!
12. Choose the best answer.
Estimating how much it will cost to reduce a risk is part of___.
a. risk prevention
b. risk management
c. risk assessment
d. risk planning
Answer:
b not shure swbwbsbwgwva
Please help me guys!!
Describe what happened to the deer and wolf populations between 1971 and 1980. How did the number of wolves affect the number of deer?
Answer:
as the deer pop. increased, the low pop. of starving wolves increased since there are more preys, but the wolves pop. marginally declined as the deer pop. went down.
The changes in the deer and wolf populations between 1971 and 1980 were that the deer population decreased due to an increase in the number of wolves.
What is population?The term population is commonly used to refer to the number of individuals in a given area.
It should be noted that wolves are deer predators, so the wolves kill and eat the deers. In this case, as the wolf population grows, they will hunt and kill deer. This will result in a decrease in the deer population.
In this case, an increase in the wolf population will result in a decrease in the deer population.
On the other hand, assuming the wolf population was reduced, this would have resulted in an increase in the deer population.
Thus, this can be concluded regarding the given scenario.
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Which of the following best describes osmosis?
Select one:
a.
Osmosis is the active transport of water across a membrane toward an area with a higher concentration of larger molecules.
b.
Osmosis is the spontaneous movement of water across a membrane toward an area with a lower concentration of larger molecules.
c.
Osmosis is the spontaneous movement of water across a membrane toward an area with a higher concentration of larger molecules.
d.
Osmosis is the active transport of water across a membrane toward an area with a lower concentration of larger molecules.
Osmosis is the type of passive diffusion in which, solvent molecules move from, a lower concentration of solute particles to a higher concentration of solute particles through a semipermeable membrane, hence option C is correct.
What is osmosis?It is the kind of passive transport that allows the transport of only solvent particles through the semipermeable membrane, on each side of the membrane concentration of solvent and solute particles having different concentrations.
It is not an active transport and does not require energy, the process is running till the equilibrium is reached at both sides of the membrane. it defines as the spontaneous movement of water.
Therefore, osmosis is the spontaneous movement of water from toward an area with a higher concentration of larger molecules through the membrane.
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which two processes would most likely cause metamorphic rocks to change into sediments
Answer:
Erosion and weathering
Explanation:
Answer:
pressure
Explanation:
This fossil from the Jurassic period looks much like
we find on Earth today.
A)
ferns
B)
fish
snails
D)
starfish
it looks much like ferns
Which structures of the digestive system, aside from the small intestine, release substances that help break down food in the small intestine?
stomach and liver
liver and large intestine
pancreas and liver
large intestine and pancreas
Answer:
Explanation:The pancreas makes enzymes that help digest proteins, fats, and carbs. It also makes a substance that neutralizes stomach acid. These enzymes and bile travel through special pathways (called ducts) into the small intestine, where they help to break down food. The liver also helps process nutrients in the bloodstream
Answer:
c. pancreas and liver
The graph shows the effect of pH on the rate of reaction to three different enzymes. What does the graph show?
Answer:
Regarding the effect of pH on the reaction rate of three different enzymes, what the graph shows is that each enzyme works better at different pH (option A).
Explanation:
Enzymes are specialized protein molecules whose function is to contribute to faster reactions with lower activation energy. To fulfill this function, enzymes must be in an optimal range of temperature and pH.
The graph shows three enzymes, one in an acidic medium, one in a neutral medium and one in a basic medium. The reaction rate of each enzyme is similar, indicating that each is working at an optimum pH. The best interpretation that can be drawn from the graph is that each enzyme works best at a different pH.
The other options are not correct because:
B. The variable "temperature" is not included in the graph.
C and D. Since the comparison of the reaction rate of a single enzyme at different pH is not being made, the graph is not useful to indicate whether an enzyme works better in acidic or basic conditions.
is it true that we see color because of the sun
Yes.
The sun emits all colors of the rainbow more or less evenly and in physics, we call this combination "white". That is why we can see so many different colors in the natural world under the illumination of sunlight. If sunlight were purely green, then everything outside would look green or dark.
Which substance is hydrophilic? Cellulose, testosterone, butter, cholesterol
The integrating center for homeostasis in the body is
Which observation is evidence of refraction in this photo
5. Explain why an artery is an organ.
Answer:
Arteries are blood vessels that carry oxygenated blood away from the heart. Their walls are composed of three layers called the tunica intima, tunica media, and the tunica adventitia, which all have different cellular structures and compositions.
Explanation:
Similarly, organs are defined are being a collection of tissues, which are joined in a structural unit to serve a common function.An artery is made up of several types of tissues including: Elastic tissue - this evens out the pressure changes in the vessel when the heart ventricles contract, by stretching and recoiling ...
8. What is the broadest level of the Linnaean classification system?
order
family
species
kingdom
Answer:
kingdom
Explanation:
Which option identifies what has occurred in the following scenario?
Ten years ago, Allie walked through a beautiful country forest filled with plants and animals. She decided to take a trip
to this forest again, only to find a bare field with no plant or animal life.
O conservation
pollution
O desertification
respiration
Write out the opposite strand of DNA
A T T G C G C G G A T T
Answer:
TAACGCGCCTAA
Explanation:
A's change to T's
G's change to C's and so on and so forth
T A A C G C G C C T A A............
The jet stream is one of the key winds that moves air masses. In which direction does the jet stream in the United State generally move air masses?
east to west
north to south
south to north
west to east
Answer: west to east
Explanation:
Just did it
Answer:
The answer you are looking for is D: west to east, on edge
Explanation:
Pls mark me Brainilist! This is for sure Right!
In regard to actin(the thin filaments) and myosin (the thick filaments), how do
muscles contract?
The globular heads of myosin tie actin, framing cross-spans between the good and bad fibers. This development slides the actin fibers from the two sides of the sarcomere toward the M line, shortening the sarcomere and bringing about muscle withdrawal.