Answer:
Hematite
Explanation:
The iron content of the mineral gives it a red hue after it has spent a long time exposed to air and moisture
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A dominant gene that codes for white hair is represented by the symbol W. If a parent with the genotype WW is crossed with a parent of genotype Ww, what percent of their offspring will have white hair?
A. 25%
B. 50%
C. 75%
D. 100%
Answer:
D
Explanation:
Seeing as the gene is dominate, the hair would still be white evening it's Ww. For the hair to be a different color both parent would need a recessive gene (w), though neither does, meaning all the kids would have white hair.
Auxins cause cells to grow ___. A. Longer on the sunny side of the stem. B. Shorter on the sunny side of the stem . C.shorter on the shaded side of the stem .d. Longer on the shades side of the stem
Answer:
D. Longer on the shaded side of the stem
Explanation:
Auxin is a plant hormone that promotes cell growth and elongation in plant stems.
It causes the cells to grow longer on the shaded side of the stem.
This growth allows for the plant to grow in the direction of the light source it has.
So, the correct answer is D. Longer on the shaded side of the stem
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In the atmosphere pool, in which molecule is the carbon found
why do you need to take biology in college if your major is Nursing?
Answer:
Because you still have to obtain degree in your nursing
If a company genetically modifies corn to produce an odor that repels insects, which best describes how the corn was modified?
Answer:
★ The corn was modified by water
Explanation:
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A researcher is curious if Bt resistant bollworms are susceptible to an insecticide called DDT. Bollworms susceptible to Bt have genotype RR or Rr, whereas those resistant to Bt have genotype rr. Bollworms susceptible to DDT have genotype tt, whereas bollworms resistant to DDT have genotypes Tt or TT. In an effort to better understand how these two genes are inherited, the researcher crosses an RR tt bollworm with an rr TT bollworm to produce the F1 generation. Then, the researcher crosses the F1 generation to produce an F2 generation. What proportion of the F2 generation is resistant to both Bt and DDT
Answer:
The correct answer is - 3/16 or 18.75% portion will be resistant to both Bt and DDT.
Explanation:
It is given that bollworms that are susceptible to Bt are represented by either RR or Rr and resistance one are shown by rr genotype and bollworms that are resistant to DDT are represent TT or Tt genotype and susceptible to DDT have tt genotype.
Cross: RR tt with rr TT
Gametes: Rt and rT
F1 cross:
RT
rT RrTt ( susceptible Bt and resistant DDT)
F1 Cross with F1
Gametes: RT, Rt, rT and rt
cross:
RT Rt rT rt
RT RRTT RRTt RrTT RrTt
Rt RRTt RRtt RrTt RrTt
rT RrTT RrTt rrTt rrTt
rt RrTt Rrtt rrTt rrtt
The bold genotypes are the three out of 16 that are resistant to both DDT and Bt.
From this diagram of fossils (sorry it’s a bit blurry) which layer is the youngest and which layer is the oldest? How do you know?
Answer:
The bottom layer is the oldest, and the top layer is the youngest
Explanation:
As time goes on more and more sediment gets piled onto a certain place, meaning the oldest fossils will keep getting deeper and deeper
cuál es el límite entre la cavidad torácica y abdominal?
Answer:
El diafragma es un músculo en forma de cúpula que separa la cavidad torácica (pulmones y corazón) de la cavidad abdominal (intestinos, estómago, hígado, etc.).
Explanation:
Which one of the following is NOT one of the two most abundant and common elements in the universe?
Helium
Hydrogen
Plutonium
Would you mind answering this one
Which fact supports the conclusion that it is important for handlers to perform regular visual inspections of livestock?
O Some diseases that affect animals can be passed on to humans.
O Viral diseases are often spread through the air and on surfaces.
O Extemal parasites can cause serious infections if left untreated.
O Bacterial infections are often caused by unsanitary environments.
please help quick
Answer:
O Extemal parasites can cause serious infections if left untreated.
Question 6
Below which of the following pH is rain regarded as 'acid rain'?
10
6
9
7
Answer:
10
Explanation:
Freshwater plants that have adapted to very moist conditions live in which type of biome?
an estuary
coral reefs
the ocean
a wetland
Answer:
A wetland
Explanation:
All the others are salt water
Answer:
wetland
Explanation:
question on picture for biology
Answer:
water enteringthrough the lungs
Explanation:
hope it's correct
Answer:
water entering through the lungs
Explanation:
Drag a number and symbol to represent the amount of time Carl worked on problems.
___ ___ ____
Answer:
25 - m
Explanation:
If Carl worked m less than 25, 25 - m would represent the amount of time Davis worked minus the difference in the amount of time that he and Carl worked, which would equal the amount of time Carl worked.
what is the function of myonemes in the euglena
Myoneme FUNCTION in Eugene viridis as the contractile vacuole in the organism. In order words, it helps in the excretion of substance out of the body of the organism
MyonemeA myoneme is a contractile structure found in some eukaryotic organisms like euglena too.
The myoneme consists of a series of protein filaments that shorten rapidly upon exposure to calcium.
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What Is Systolic Blood Pressure?
Answer:
It is the pressure when the heart pushes blood out . The number when pressure is checked written on the top is the systolic pressure of the heart .
Explanation:
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Good afternoon !
Answer:
Blood pressure is the pressure of circulating blood against the walls of blood vessels. Most of this pressure results from the heart pumping blood through the circulatory system. When used without qualification, the term "blood pressure" refers to the pressure in the large arteries.
Range:-
What is high blood pressure (hypertension)?
Blood Pressure Levels
Normal systolic: less than 120 mm Hg diastolic: less than 80 mm Hg.
At Risk (prehypertension) systolic: 120–139 mm Hg diastolic: 80–89 mm Hg.
High Blood Pressure (hypertension) systolic: 140 mm Hg or higher diastolic: 90 mm Hg or higher.
Units:-
Blood pressure is measured in units of millimeters of mercury (mmHg). The readings are always given in pairs, with the upper (systolic) value first, followed by the lower (diastolic) value.
Which statement best describes how the visible energy from the sun is different from the non visible energy.
answer choices:
A. it travels at a different speed.
B. it travels at a different distance.
C.it has different wavelengths.
D. it has different amplitudes.
Plz help ty ;D
Answer:
A.it travels at a different speed
bisible energy from the sun is different from the non visible energy.
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what is the role that humans play in artificial selection
Answer is there options if not then i think it would be so then they can reproduce for offsprings to greater the population.
Explanation:
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Please Help
Which resource is renewable?
A. Wind
B. Diamonds
C. Aluminum
D. Coal
Answer:
A. Wind
wind is a renewable resource because there is unlimited supply of it.
Explanation:
Carrying capacity is Group of answer choices seldom reached by marine producers and consumers because of the vast resources of the ocean. the maximum population size that a particular environment can support. fixed for most species over most of their range most of the time. the term used to describe the stress a population undergoes due to limited resources.
Answer:
the maximum population size that a particular environment can support.
Explanation:
A population can be defined as the total number of living organisms living together in a particular place and sharing certain characteristics in common.
Generally, these populations may be divided into a fraction of the population (subpopulation) based on certain factors and reasons.
Population regulation can be defined as a biological process that balances limiting factors affecting the growth of a population based on density. The factors that regulate the growth of a population are divided into two (2) main categories and these includes;
I. Density-independent factors.
II. Density-dependent factors.
Density-dependent are regulating factors such as predation, diseases, and competition that affect the size of the population of living organisms through decreasing or increasing mortality and birth rate.
Furthermore, density-independent factors do not have an increasingly greater effect as a population's density increases. Thus, its effect are reduced as a population's density increases in size.
Carrying capacity is the maximum population size that a particular environment can support. The carrying capacity of an environment is denoted by the letter k.
3. Two body systems work together to help remove waste products from blood. What
are these two systems?
a. Respiratory and excretory
b. skeletal and digestive
c. circulatory and reproductive
d. nervous and excretory
If an object is stationary, it means....
A) There are balanced forces acting on the object
B) There are unbalanced forces acting on the object
C) The object is in motion
D) The object is experiencing air resistance
To start an action potential moving down the axon, what must happen?
Answer:
Different ions cross the neuron membrane and stimulus causes sodium channels to open I think.
2. How does temperature change in the troposphere?
A. It increases with height.
B. It decreases with height.
C. It increases and then decreases with height.
Answer:
OPTION-A IS CORRECT
IT INCREASES WITH HEIGHT
Explanation:
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How does the climate change that scientist are observing now compare with climate change in the past?
Answer:
In this new generation the scientists are observing the climate change with the help of equipment of the science invention. In earlier time the climate change is observed by the some priests and some guessing mind of old peoples. HOPE THIS HELPS YOU. GIVE ME THANKS.
A metamorphic rock is a rock that has been
Answer:
The answer is B.Changed from it's original state.
Answer: B. Changed from its original state
Explanation: Metamorphic rocks are rocks that change form.
Which of the following defines an ecological succession
Answer:Ecological succession is the process that describes how the structure of a biological community (that is, an interacting group of various species in a desert, forest, grassland, marine environment, and so on) changes over time. The structure of this community becomes more complex as new species arrive on the scene.
Explanation:
IM TIMED PLS HELP
How does deforestation impact greenhouse gases in the atmosphere the most?
A.
Deforestation increases the build-up of greenhouse gases because the removed trees would have consumed carbon dioxide.
B.
Deforestation removes trees, which shelter organisms that release gases that purify the air.
C.
Deforestation decreases the amount of greenhouse gases because trees produce many of them.
Answer:
Deforestation increases the build-up of greenhouse gases because the removed trees would have consumed carbon dioxide.
Explanation:
Answer:
A. Deforestation increases the build-up of greenhouse gases because the removed trees would have consumed carbon dioxide.
Explanation:
Burning fossil fuels, in combination with the destruction of carbon sinks due to deforestation and other activities, has contributed to more and more carbon dioxide building up in the atmosphere – more than can be absorbed from existing carbon sinks such as forests.
What is the pressure of a gas if the volume is 96.2 L, the temperature is 25⁰C and there are 1.24 moles?