The Trace Materials Unit uses methods and techniques to predict items of evidence. Instrumental methods are considered faster in providing results as compared to traditional chemical analysis.
What is the Instrumental method?Instrumental analysis is a field of analytical chemistry that helps to investigate analytes using some sort of scientific instrument.
Many of the instrumental methods can be done for both qualitative and quantitative analysis.
The major categories of instrumental methods are as follows:
Spectral. Electroanalytical. Separatory.Instrumental methods are considered much faster at producing results as compared to traditional chemical analysis. This factor is often important during a crime investigation.
Thus, the instrumental method is considered better as compared to chemical analysis.
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You are assigned with the task of comparing the United States with Canada. Your
primary concerns are patriotism, college and career readiness, crime rates, wealth,
cultural norms and values. Which social institution would best help you with your
research?
a- Family
b-Religion
c-Education
d- Economics
If all of these organisms were
on one food chain, which
would be last?
A predator
B decomposer
C prey
D plant
Answer:
B. Decomposer
Explanation:
Prey eats plant, predator eats prey, decomposers eat predator.
Answer:
Option D, plants. Plants are the producers in this ecosystem, producers are always on the bottom of the trophic pyramid.
what is the meaning of Gravid
Answer: I’m pretty sure gravid means pregnant.
Explanation:
Hope this helps :)
Based on the section "Zeus Is Helper And Protector," which of the following statements is TRUE? A Zeus and Jupiter are the same god. B Zeus tells rich people to only care for themselves. The Greeks believe Zeus is a powerful god. Zeus does not have the power to punish people. Park Next C D
Answer:
The Greeks believe Zeus is a powerful god
explain the role bacteria play in a human body?
Answer:
The bacteria in our bodies help degrade the food we eat, help make nutrients available to us and neutralize toxins,
Explanation:
50 POINTS!!!! The following diagram shows the branching tree for four kingdoms and some of their shared derived characteristics.
What shared characteristic can be written at point X? Use complete sentences to explain your answer.
Answer:
Heterotrophs
Explanation:
Protists, plants, fungi and animals alike have heterotrophic cells. This meaning they depend on organic molecules for energy as opposed to plants that can make their food from abiotic factors.
How does biotechnology use viruses and bacteria?
to copy a specific antigen
to produce proteins for human consumption
to respond to and destroy cancer cells in humans
as a carrier to insert a desired DNA segment into an organism
How many significant digits are there in the following number: 405001 Select one: a. 6 b. 5 c. 3 d. 4
Answer:
A: 6
Explanation:
405001 does contain zeros, which can make it confusing when trying to figure out how many significant figures there are. However, since the zeros are on the inside of the number, they are counted as "significant".
For example,
19205 contains 5 significant figures while 50,000 contains 1 significant figure.
Use the graph to find the factorization of x2 - 7x+12.
A. (x-6)(x-8)
B. (x - 3)(x - 4)
C. (x+3)(x + 4)
OD+
D. (x + 6) (x+8)
Answer:
Explanation:
Use the graph to find the factorization of x2 - 7x+12.
A. (x-6)(x-8)
B. (x - 3)(x - 4)
C. (x+3)(x + 4)
OD+
D. (x + 6) (x+8)
what do you think might happen to a bird that doesn't have a beak that can be used to eat the food that exists in a certain area?
Answer:
Down below
Explanation:
The bird would either die, find other food, or evolve to have the beak it needs. It's a matter of natural selection. If the bird doesn't learn that it needs a certain beak, then the species will die off. However, if the bird learns that it needs a certain type of beak, it's species will evolve to have this beak. In the off-chance that the bird doesn't evolve, it will most likely find another source of food to survive.
Hope this helps! If you have anymore questions, I am free to answer them! :D
The ocean helps the _____ be more moderate due to currents bringing warm water to colder areas.
A: temperature
B: weather
C: salinity
D: climate
Answer:
D: climate
Explanation:
The ocean helps the climate be more moderate due to currents bringing warm water to colder areas.
Name the three hormones that are involved in the stress response and identify their function.
Answer:
cortisol, catecholamines and thyroid hormone
Explanation:
trust
Answer:
Three hormones are adreenalin, cortisol, and your thyroid hormone.
Explanation:
Adrenaline is what gives you energy, cortisol is your prime stress hormone and the thyroid hormone slows when you are stressed. I hope this helps! :)
A leaking septic tank is polluting groundwater. What kind of pollution is this?
A: watershed pollution
B: nonpoint-source pollution
C: point-source pollution
D:aquifer pollution
Energy Pyramids represent the food chain energy and population sizes. Which statement is NOT true.
A. 90% of available energy is lost between each trophic level
B. Populations are smaller as you go up the pyramid
C. Heat is only lost at the consumer levels
D. Decomposers play a role at all trophic levels
Meosis occurs in a ______________ that is a _______________ that undergoes a ___________________
Meiosis occur in diploid cell that undergoes reductional division.
what is meiosis?Meiosis, also called reduction division, division of a germ cell involving two fissions of the nucleus and giving rise to four gametes, or germ cells.
The process of meiosis is characteristic of organisms that reproduce through fusion. Such species have in the nucleus of each cell a diploid (double) set of chromosomes, consisting of two haploid sets (one inherited from each parent). These haploid sets are homologous—i.e., they contain the same kinds of genes, but not necessarily in the same form.
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Which of the following statements about the Hardy-Weinberg principle are true?
Select all that apply.
It assumes certain forces are acting on a population.
It is used to model genetic equilibrium.
It assumes certain forces are not acting on a population.
It is used to model gene flow.
Answer:
-It assumes certain forces are not acting on a population
-It is used to model genetic equilibrium
It assumes certain forces are not acting on a population and It is used to model genetic equilibrium.
Thus, Mendelian genetics are discussed in the context of populations of diploid, sexually reproducing individuals in the Hardy-Weinberg Theorem.
This theorem argues that allele frequencies in a population won't change from generation to generation under a particular set of assumptions.
The anticipated genotype frequencies are p2, 2pq, and q2 if a population has two alleles at a particular site and the allele frequencies are p and q. Once a population is in Hardy-Weinberg equilibrium, its frequency distribution won't vary from generation to generation.
Thus, It assumes certain forces are not acting on a population and It is used to model genetic equilibrium.
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Here is an image of the mitochondria. Mitochondria numbers can differ between cell types based on the function of the cell. Which of these cells would contain the highest number of mitochondria?
A) skin cell
B) lung cell
C) muscle cell
D) red blood cell
[tex]\huge\mathbb{ANSWER:}[/tex]
[tex]_____________________________[/tex]
Which of these cells would contain the highest number of mitochondria?
A) skin cell
B) lung cell
[tex]C) \: \large\mathcal\color{red}{muscle \: cell}[/tex]
D) red blood cell
[tex]_____________________________[/tex]
[tex]\small\mathbb\color{gold}{Hope\: it \: helps}[/tex]
Answer:
Letter C is the correct answer Good luck study love your eyes
Which is true according to Oparin and Haldane?
O The first organic molecules were formed in the sea, from the gases in the atmosphere.
O The early atmosphere contained methane, carbon dioxide, and oxygen
O The formation of amino acids was probably complete within one million years.
O Organic molecules eventually merged from several places on Earth.
Answer:
A) The first organic molecules were formed in the sea, from the gases in the atmosphere.
Explanation:
Here's a jist of what they proposed.
Which organisms are likely to be found in level 1 of this diagram? Select the
two correct answers.
4
600
3
1550
Trophic Level
2
17000
1
340000
O A. Daisy
B. Tiger
O C. Algae
O D. Squirrel
O E. Rabbit
Answer:
Explanation:
Which organisms are likely to be found in level 1 of this diagram? Select the
two correct answers.
4
600
3
1550
Trophic Level
2
17000
Algae are the primary producer in the trophic levels. Therefore, option "C" is correct.
What are tropic levels?Tropic levels are the levels or steps in the food chain. In tropic levels, the energy is transferred to different levels through food produced by the lower levels. The source of nutrition varies in different food chains.
There are four types of tropic levels, first primary producers are the autotrophs which produce their own food. Second, are herbivores which consume the autotrophs also called primary consumers. Third are secondary consumers who are carnivores and fourth are the tertiary consumers who are also carnivores.
example: sun, plants, deer, and tigers.
Tropic levels play a key role in understanding the flow of energy.
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How fossils are formed? Explain (3)
Answer:
Fossils are formed from the remains of creatures that went extinct many years ago. Fossils form by sediment building up over a long time period. This sediment then compacts, turning it into a solid. This solid may be rock, sap, or mud.
) During a 56-week test, 3,731 patients participated in the double-blind trial. participants did not have type 2 diabetesmellitus. one group of participants received once-daily subcutaneous injections of liraglutide at a dose of 3.0 mg. The other participants received a placebo. Both groups received counseling on lifestyle modification. At the end of the 56 weeks, the bodyweight of each participant was determined. Which of the following best the question that was being investigated in the study? a. Can body mass index affect the onset of diabetes? b. Is liraglutide effective for weight loss? c. What effect does Liraglutide have on diabetes? d. How does lifestyle modification counseling affect body weight?
Once identified the controlled, the independent, and the dependent variables, we can say the question is B) Is liraglutide effective for weight loss?
To answer this question, what we need to do first is to identify the variables involved in the experiment.
What are the variables involved in an experiment?Dependent variables
These are the variables whose response depends on any change in the independent variable.
Independent variablesThese are all the variables in an experiment that provoke a response in another variable. They are modified in the experiment to analyze how another variable responds to it.
Controlled variableControlled variables are kept constant in an experiment. Unlike the independent variable, the controlled variables do not influence the results. These variables do not affect the response of the dependent variable.
In this experiment we can also identify two groups. The experimental group and the control one. Both groups are composed of individuals coming from the same population.
What is the control group?The control group is used to identify any factors other than the modified variables of the treatment that might influence the results obtained in the study.
What is the experimental group?This group gets the treatment to observe how the independent variable affects the individuals.
In the experiment,
Control group ⇒ receives placeboExperimental group ⇒ receives liraglutideindependent variable ⇒ liraglutidecontrolled variables ⇒ lifestyle modification, participants did not have type 2 diabetes mellitus.dependent variable ⇒ bodyweight of each participantAccording to the identification of the variables, the question that was being investigated in the study is option B) Is liraglutide effective for weight loss?
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“*•Pls help me!!!•*”
Answer:
Cold weather
Explanation:
Drought, large numbers of plants, and heavy wind are all factors which would cause the further spreading of wildfiresWildfires generally take place in hot, humid, and dry weatherHence, cold weather decreases the magnitude of the wildfireOption 3Answer:
Cold weather
Explanation:
I second the other person, thank you! Have a blessed day <3
what is the three kind of volume
Sphere Volume = 4/3 πr³ , where r is the radius.
Cylinder Volume = πr²h , where r is the radius and h is the height.
Cone Volume = 1/3 πr²h , where r is the radius and h is the height.
Chemical reactions can create more complex products. What evidence best explains this phenomenon? WILL MARK BRAINLIEST FOR CORRECT ANSWER (100 points)
Water molecules combine to form complex macromolecules that the body needs.
The molecular structure of complex macromolecules show that a chemical reaction has occurred.
Larger macromolecules breakdown into smaller macromolecules and combine during the reaction.
The basic need for oxygen makes the element essential to create macromolecules.
Answer:
Option C
Explanation:
Larger macromolecules break down like water and create covalent macro molecules.
Later while chemical reactions they combine again to form covalent molecules .
Option C is correct
I Will mark Brainliest: Which area is the most common source region for cold, dry air masses that move over NYS? 1) North Atlantic Ocean 2) Gulf of Mexico 3) Central Canada 4) Central Mexico
Answer:
1
Explanation:
north Atlantis ocean is the most common source region for cold
____________ is a tool that helps us create cost-effective ways to protect our health and the environment
According to the research, risk assessment is a tool that helps us create cost-effective ways to protect our health and the environment.
What is risk assessment?It is the process aimed at estimating the magnitude of the risks that could not be avoided, that is, it seeks to identify and eliminate risks present in the environment.
It allows you to adopt measures and make decisions focused on meeting the objectives established in terms of health and the environment.
Therefore, we can conclude that according to the research, risk assessment is a tool that helps us create cost-effective ways to protect our health and the environment.
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Energy connection- Be able to identify an organism at each level of the
energy pyramid.
o Producers- What is their source of energy?
o Decomposers- What are they?
o Consumers
▪ Herbivores
▪ Carnivores
Omnivores
Scavengers
Explain the levels of organization beyond our planet.
Answer:
there is not much the land and earth could be better-tooken care of
Explanation:
Identify the components of blood and describe the function of each component.
Plasma is the major component of the blood and is largely made up of water, with proteins, ions, nutrients, and wastes thrown in for good measure. The red blood cells are in charge of transporting carbon dioxide. Blood clotting is controlled by platelets. White blood cells are immune system cells that aid in immunological response.
V.O.C is the acronym for ___________________.
A: Very original components
B: Vast open containers
C: Violently oxidizing chemicals
D: Viotile organic compounds
Answer:
D
Explanation:
volatile organic compound