What specialized structure helps a vascular plant to soak up water after a rainfall in a desert?
A. Thin sharp spines on the leaves.
B. Wide stems that catch rainwater.
C. Stems that shrivel in the rain.
D. An extensive shallow root system with root hairs.
CAN SOMEONE PLEASE HELP ME
Enzymes in saliva begin the chemical digestion of _________. fats carbohydrates protein. vitamins
The surgical fusion (joining together) of two bones to stiffen a joint, such as an ankle, elbow or shoulder, is known as:
Arthrodesis is the medical term for the surgical fusion of two bones to stiffen a joint such as an ankle, elbow or shoulder. It is performed to relieve pain in a joint that hasn't responded well to other treatments, or to correct a deformity or stabilize a joint. The bones are fixed together until they fuse into one solid bone.
Explanation:The surgical fusion, or joining together of two bones to stiffen a joint, such as an ankle, elbow or shoulder, is known as arthrodesis. This procedure is typically used to relieve pain in a joint which hasn't responded well to other types of treatment. It can also be used to correct a deformity or stabilize a joint. During arthrodesis, the surgeon removes the articular cartilage on the surfaces of the two bones that create the joint. Once the bones are exposed, they are then fixed together using pins, screws, or plates until they fuse together and become one solid bone.
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Lepirudin is a drug that inhibits thrombin. it will have an effect specifically on the __________.
The answer to this question is that Lepirudin have an effect specifically on the common pathway of coagulation. Lepirudin is a drug that helps prevent blood clots to patients with low blood platelets. Lepirudin can be administered through an IV or SQ.
Are a dandelion’s the leaves simple, compound, peltate, or perfoliate? What leads you to this conclusion?
In a population of tree frogs, the allele that causes yellow eyes (Y) is dominant over the allele that causes orange eyes (y). If 85% of frogs have yellow eyes, what is the frequency of the dominant allele?
Hardy-Weinberg Principle
Genotype frequency equation
[tex] p^{2} +2pq + q^{2} = 1 [/tex]
Where p² is the freq of homo dominant genotype, 2pq is the freq of heterozygous genotype and q² is the freq of homo recessive genotype.
Allele frequency equation
p + q = 1
Where p is the frequency of dominant alleles and q is the frequency of recessive alleles.
Yellow eyes in the frog offspring is a phenotype (physical trait) that would be a expressed by a geneotype (YY or Yy). This frequency, 0.85 includes: p² + 2pq
0.85 + q² = 1
q² = 0.15
p = [tex] \sqrt{0.15} [/tex]
Then p + [tex] \sqrt{0.15} [/tex] = 1
1 - [tex] \sqrt{0.15} [/tex] = p
p = 0.613
61%
Where did the marine life most affected by the extinction live?
1.The Arctic Circle
2.Rivers And Streams
3.Warm Tropical Waters
4.None Of The Above
Using the information above, what is the correct sequence to describe the life cycle of a retrovirus.
With the rain forests disappearing rapidly, it is believed that ________
A population of mice lives in a city. the largest mice tend to be killed by predators and the smallest mice cannot compete for food. what type of selection is this
Answer:
Stabilizing selection
Explanation:
The daily values reflect the needs of an "average person" consuming between _____ calories a day.
The Daily Values (DV) reflect the needs of an "average person" consuming between 2,000 and 2,500 calories a day.
The DV is a set of reference values that are used to help people make informed food choices. They are based on the nutrient needs of an average person, taking into account factors such as age, sex, and activity level.
The DV is not intended to be used as individual intake goals. Instead, they are a tool that can be used to compare the nutrient content of different foods.
For example, if you are trying to choose a breakfast cereal that is high in fiber, you can look at the DV for fiber to see how much fiber is in each serving.
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What do hypotheses, theories, and laws have in common?
Hypotheses, theories, and laws are scientific concepts used to understand the natural world. They are based on observations, experiments, and evidence. Laws are mathematical descriptions of observed phenomena.
Explanation:Hypotheses, theories, and laws are all scientific concepts that help us understand the natural world. They are based on observations, experiments, and evidence. Hypotheses are proposed explanations for a specific phenomenon, theories are well-supported explanations that have been extensively tested, and laws are mathematical descriptions of observed phenomena. While hypotheses and theories can change based on new evidence, laws are often considered more fundamental and have been extensively validated.
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In the spinal cord, white matter is separated into ascending and descending tracts organized as
what would happen if the horomone levels did not have their peak just before day 14?
Gains in language development during adolescence are largely influenced by
Which of the following choices are all abiotic factors of a freshwater ecosystem? A. water, soil, temperature, plants B. water, light, temperature, plants C. water, light, temperature, nutrients D. water, light, temperature, fish
Answer: C. water, light, temperature, nutrients
Explanation:
Abiotic factors are the non-living factors of the environment these include water, temperature, sunlight, nutrients, soil and wind.
The abiotic factors influence the growth and abundance of living species in an ecosystem.
In a freshwater ecosystem water, light, temperature, and nutrients will be abiotic factors.
The bacterium Bacillus anthracis, which causes anthrax, has been developed as a biological warfare agent.
Anthrax is an infection that is caused by the bacteria Bacillus anthracis. The infection is spread by contact with the spores of the bacteria.
Bacillus anthracis and Its Role as a Biological Weapon:
Bacillus anthracis is the bacterium responsible for causing anthrax. Unfortunately, it has been utilized as a biological weapon and is listed by the United Nations as a potential agent of bioterrorism.
Over several months in 2001, letters contaminated with anthrax spores were sent to various members of the news media and the United States Congress. This attack resulted in 11 cases of cutaneous anthrax and 11 cases of inhalation anthrax. Five individuals who developed pulmonary anthrax did not survive.
Question:
The bacterium Bacillus anthracis, which causes anthrax, has been developed as a biological warfare agent. Which one of its following abilities could have led to this? Its ability to undergo reproduction in the absence of energy sources. Its ability to form endospores in harsh conditions. Its ability to grow rapidly in harsh conditions.
In his book the origin of species, darwin argued that species living today descended from a succession of ancestral species. what mechanism did darwin propose to explain how evolution occurs
How many nitrogen atoms are in one molecule of the compound Al(NH 3 ) 2 ?
Answer:
2 Nitrogen.
Explanation:
The chemical compound contains more than one different element. The compound contain different chemicals that always combine in a fixed ratio and there constitution of the elements remain the same.
The molecule in the compound can be found by looking at the number of molecules and its formula. In the formula Al(NH 3 ) 2 Nitrogen has two molecules, as the single nitrogen will be multiplied by two present outside the formula.
Thus, the answer is 2.
He idea that offspring inherit traits that their parents acquired by interacting with the environment, like the longs necks of giraffes having evolved to help them reach tall branches, was championed by
Which is most important to check when inspecting by touch a possible fraudulent piece of id?
"what is the direct cause of death for the aquatic animals during eutrophication"
Which kingdom would include an organism that is multicellular and makes its own food?
Can daca students be physician assistant
The ___ layer is the support layer for the skin and is composed largely of adipose tissue.
The subcutaneous layer, mostly composed of adipose tissue, is the supportive skin layer that offers cushioning, insulation, and a passageway for blood vessels and nerves.
Explanation:The subcutaneous layer, also known as the hypodermis, is the support layer for the skin and is composed largely of adipose tissue. This layer serves several functions including cushioning and protecting deeper tissues, aiding in thermal insulation, and providing a passageway for nerves and blood vessels. Adipose tissue plays a crucial role in these functions as it cushions the skin, stores calories, and has an insulating capacity, helping the body to maintain its optimal temperature.
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Bio 1 01.04 properties of water
1.04 Properties of Water
Question: What effect will adding soap to water have on surface tension?
Hypothesis: If, soap is added to the water slowly dropped on a penny then, the penny will hold more water.
Independent/Dependent/Control Variables: Independent: the amount of soap/oil; Dependent: the penny; Control: amount of oil/water given
Materials: 3 cups, water, canola or olive oil, dish soap, a pipette and or needle/syringe, pennies
Procedure:
· Gather three identical cups
· Add water to the first one (1/3 cup of water in each), add water and soap in the second one, and olive or canola oil in the third.
· Lay out three pennies.
· Take pipette and slowly bring water in from cup #1, drop onto penny until water falls over, record results of how many drops it took.
· Repeat with cup numbers 2-3 and record information/data.
Data/Observations: With the regular water on a penny, I noticed that only 13 regular drops could fit on without falling over.
With the water+soap, it got up to 24 drops before falling over. Then on the 25th drop, the mixture fell off.
With the oil, it was the highest at 29 drops before falling over slowly. Therefore, oil holds the most surface tension in this experiment.
The only people that share 100 percent of their genes with one another are
Answer:
Identical twins or monozygotic twins
Explanation:
Identical twins are also called as monozygotic twins. Here, one sperm fertilizes an egg leading to formation of one zygote. The very first division in single zygote forms two identical cells that develop into two embryos. Since the resultant two embryo are derived from same zygote, they share 100% of their genes with each other.
What is the main influence of Earth's climate?
What happens to an enzyme once it catalyzes a chemical reaction?
Overuse of resources is a serious issue that will affect generations to come. Identify which practice is NOT being used, or researched, to help this issue.
A. Desalinating water
B. Genetically modifying food
C. Mining asteroids
D. Creating more fossil fuels
Creating more fossil fuels is not being used or researched to help address the issue of overuse of resources.
Explanation:The practice that is NOT being used or researched to help address the issue of overuse of resources is Creating more fossil fuels. In the quest to address resource overuse, creating more fossil fuels isn't a viable practice or subject of research. The focus, instead, revolves around sustainable alternatives to reduce reliance on finite resources. Efforts prioritize renewable energy sources like solar, wind, and hydroelectric power, promoting efficiency, recycling, and implementing eco-friendly technologies. Research aims to develop innovative methods for conservation, promoting circular economies, and fostering behavioral shifts toward responsible consumption. Creating more fossil fuels contradicts the imperative to mitigate environmental impact and climate change, aligning poorly with sustainable resource management strategies crucial for our future wellbeing.
Final answer:
OPTION D
Creating more fossil fuels is not a practice being used or researched to help with the overuse of resources. Instead, efforts are focused on reducing reliance on fossil fuels and improving renewable energy sources and more sustainable practices like desalination, genetic modification of crops, and potentially mining asteroids.
Explanation:
Overuse of resources is indeed a critical issue affecting sustainability and future generations. To mitigate these concerns, various practices have been implemented or are presently being researched. Desalinating water (A) is a process used to make sea water drinkable, which helps preserve freshwater sources. Genetically modifying food (B) can lead to crops that are more resistant to pests and changing climate conditions, ultimately improving food security. Mining asteroids (C) is being explored as a way to acquire minerals and other resources without further depleting Earth's reserves.
However, creating more fossil fuels (D) is not a practice being used or researched to help with the overuse of resources. The use and extraction of fossil fuels have significant environmental impacts, including habitat destruction and climate change due to excessive greenhouse gas emissions. Instead, there is a focus on reducing reliance on fossil fuels and increasing the use of renewable energy sources that do not produce carbon dioxide as a by-product.