Answer:
to preserve its stability.
to avoid cross contamination.
Explanation:
Biological evidence refers to all biological materials such as hair, tissue, bones, teeth, blood or other bodily fluids etc. These biological materials are collected from the site of crime. These evidences helps in finding the criminals. These biological evidences has to be kept at safe place in order to avoid contamination and preserve its stability so it can be used for solving the problem.
Answer:
temp and package for plato
Explanation:
im big brain boiiis
Can somebody please help me with this question?
Answer:
Segmented Worm
Explanation:
Select the correct answer.
A herd of sheep moves up the mountain to graze during summer, and migrates to the valley during winter. What type of migration do the sheep follow?
A.
one direction only
B.
seasonal movement
C.
daily movement
D.
one return journey
Salt marsh, Atlas, and Indianmeal are three types of what insect?
Answer:
Aquatic Insects I believe
Explanation:
Which of these work together in a feedback loop?
A. Insulin and glucagon
B. Pancreas and large intestine
C. Testes and sweat glands
D. Glucose and calcium ions
Answer:
Insulin and glucagon
Explanation:
I got this answer correct
True or false
DNA moves through a gel because it is negatively charged and is attracted to the positive electrode.
Answer:
it is true
Explanation:
Herpes is categorized as a
A)bacterium.
B)mold.
C)spore.
D)virus.
Answer:
D
Explanation:
Herpes simplex viruse
Answer:
D Virus
Explanation:
How does heart rate change during and after an exercise is performed for two different periods of time?
Answer: During exercise, your heart usually beats faster to deliver more oxygen to your body cells at a faster rate while after an exercise your heart rate will typically drop as soon as the heart start to rest
Explanation:
House sparrows from England were released in the United States. They have competed with native bluebirds. These house sparrows are __________.
Answer:
House sparrows from England were released in the United States. They have competed with native bluebirds. These house sparrows are invasive species.
Explanation:
House sparrows are invasive species that were introduced in the United States and once established these birds started to compete with native species and managed to displace many native birds. They seriously affected farmlands. Now they are everywhere always associated with human being presence.
Biologic Invasive species: It refers to new species that disperse and establish in a new area far or out of their original distribution range. Once established, these species expand their distribution from the first invaded spot and overgrows. As they expand, they compete with other species for resources, such as food sources, water, shelter, radiation, exposure, among others. Species are considered to be invasive because of their high reproductive rate, population growth, and interaction with native species, which provokes huge damages in the native ecosystems. It is very common for these species to scape and start new populations in the new area, where they have less environmental pressure and better conditions than in their origin area -fewer predators, more resources, better nitches-, and these factors favor their establishment.
There are some typical steps in an invasion process:
1) Introduction or dispersion to the new area,
2) Naturalization. The new species establishes in the new area. It can grow, reproduce, and make use of resources.
3) Overgrowth and uncontrolled expansion.
4) Interaction with other species.
5) Stabilization.
In some cases biologic invasions are natural processes, that occur in small groups of individuals that can expand to other ecosystems, and the appearing or despairing of barriers promotes their expansion. But these biologic invasions have been accelerated by human beings, referring to this as "human-assisted invasions".
A scientist set up an experimental ecosystem in a sealed room with no windows. The experimental ecosystem has plants, and animals that eat those plants. The scientist can control whether the room is light or dark with a light switch outside the room.
The amount of carbon in the air of the ecosystem started out low. Then the amount of carbon in the air started to increase. Is the increase because the scientist switched the light on or because she switched the light off? What happened to the number of energy storage molecules in the living things?
The scientist . . .
a
switched the light off, and the number of energy storage molecules in the living things decreased.
b
switched the light off, and the number of energy storage molecules in the living things increased.
c
switched the light on, and the number of energy storage molecules in the living things increased.
d
switched the light on, and the number of energy storage molecules in the living things decreased.
Answer:
Option-A
Explanation:
In the given question, the artificial ecosystem was prepared by the scientist which included the animals and plants. The light and dark conditions were controlled by a switch and bulb.
In the beginning, the amount of Carbon in the form of carbon dioxide was low due to the utilization of carbon dioxide by plants to perform photosynthesis. Then the amount of carbon dioxide increased in the atmosphere, the reason could be due to less consumption of carbon dioxide. The carbon dioxide is not uptake by plants during night conditions when photosynthesis process slowed down or stops.
Therefore, the dark condition was created by the scientist by switching off the lights and the number of energy molecule decreased as no photosynthesis was occurring.
Thus, Option-A is the correct answer.
Answer:
A
Explanation:
1. What is a disadvantage to living in a group?There could be less competition
It makes it easier to find a mate
There are more individuals to watch out for predators
There is an increased risk of parasitism and disease
Answer:
There is an increased risk of parasitism and disease
Explanation:
Answer:
There is an increased risk of parasitism and disease
Explanation:
I just had this question
A doctor hypothesizes that a patient's digestive system is not properly secreting digestive enzymes. Which of the following would be a plausible diagnosis?
The pancreas is no longer secreting pepsin.
The stomach is no longer secreting pepsin.
The stomach is no longer secreting bile.
The pancreas is no longer secreting bile.
Answer: B. The stomach is no longer secreting pepsin.
Pepsin is a protein digesting enzyme that performs protein digestion in the stomach.
Bile is produced by the liver for the digestion of lipids in small intestine. The pancreas secretes pancreatic juice, not bile.
Help please. I posted a picture of the question and answer choices.
Answer:
its b i think
Explanation:
its not c for sure and
Which of these DOES NOT affect the carrying capacity of an ecosystem?
1.variety of different food
2.total amount of food
3.competition for food
4.food being available over time
according to the article, what changed have occurred over the last twenty years to improve conditions on the galápagos islands? check all that apply
PLZ HELP MEEEE GUYSS! ILL GIVE BRAINLIEST TO THE PROPER ANSWER PLS!
What are 5 ways carbon dioxide is released into the environment?
What is the role of decomposers in the carbon/oxygen cycle?
How do humans impact the carbon/oxygen cycle
Answer:
Explanation:
*organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes
*In terms of this cycle, the decomposers metabolize oxygen and release carbon dioxide. The primary producers then use these nutrients to fuel photosynthesis, which provides oxygen for the consumers
*burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere.
IF ANYONE GOES TO ASU PREP AND TAKES NAVARROS BIOLOGY 1B PLEASE HELP IM DOING MY DBA TOMORROW
What are causes of climate change?
please elaborate : ) thank you!
why does our planet appear blue?
Answer:
Mars is the red planet; the Moon is an ashy grey; Saturn shines yellow and the Sun is a brilliant, blinding white. But our planet, when seen from the depths of space, whether we rise up above our world only slightly, in low-Earth orbit, or whether we travel to the outer reaches of our Solar System, shines a glorious blue.
Explanation:
Water vapor. The most abundant greenhouse gas, but importantly, it acts as a feedback to the climate. Water vapor increases as the Earth's atmosphere warms, but so does the possibility of clouds and precipitation, making these some of the most important feedback mechanisms to the greenhouse effect.
Carbon dioxide (CO2). A minor but very important component of the atmosphere, carbon dioxide is released through natural processes such as respiration and volcano eruptions and through human activities such as deforestation, land use changes, and burning fossil fuels. Humans have increased atmospheric CO2 concentration by more than a third since the Industrial Revolution began. This is the most important long-lived "forcing" of climate change.
Methane. A hydrocarbon gas produced both through natural sources and human activities, including the decomposition of wastes in landfills, agriculture, and especially rice cultivation, as well as ruminant digestion and manure management associated with domestic livestock. On a molecule-for-molecule basis, methane is a far more active greenhouse gas than carbon dioxide, but also one which is much less abundant in the atmosphere.
Nitrous oxide. A powerful greenhouse gas produced by soil cultivation practices, especially the use of commercial and organic fertilizers, fossil fuel combustion, nitric acid production, and biomass burning.
Chlorofluorocarbons (CFCs). Synthetic compounds entirely of industrial origin used in a number of applications,
You might have heard that the ocean is blue because the sky is blue, and water reflects the skies. Well, the sky is blue; that’s for certain. And the sky is blue because our atmosphere is more efficient at scattering blue (shorter-wavelength) light than red (longer-wavelength) light. This is the reason why the earth looks blue in color.
HOPE IT HELPS YOU
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Which stage is the last stage of speciation?
Answer:
The populations become adapted to different environments and eventually become so different that they cannot imterbreed to produce fertile of spring.
Speciation is the evolution of one species into two different kinds , and when they become isolated , that is the final step , since they cannot interbreed any longer .
Explanation:
Hope it helps !!!!
On a phylogenetic tree, what do the branch lengths represent?
The age of the organisms
amount of genetic change since divergence
amount of genetic change since convergence
The age of divergence
Answer:
the evolutionary time between two nodes
Explanation:
Branch lengths indicate genetic change i.e. the longer the branch, the more genetic change (or divergence) has occurred
Which situation below would have the strongest gravitational force between them?
A 10 kg mass and a 10 kg mass at 30 km apart.
A 2 kg mass and a 2 kg mass at 10 km apart.
A 10 kg mass and a 10 kg mass at 10 km apart.
A 10 kg mass and a 2 kg mass at 30 km apart.
Give three pieces of geological evidence that are inconsistent with the geologic time scale of millions of years.
Answer:
The geologic time scale was developed after scientists observed changes in the fossils going from oldest to youngest sedimentary rocks. They used relative dating to divide Earth's past in several chunks of time when similar organisms were on Earth.
Explanation:
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Which heart structure prevents blood from flowing backward? aorta valve septum coronary artery
Answer:
valve
Explanation:
valve is present in veins and other structures so as to prevent blood to flow backward
Answer:
The answer is valve.
Explanation:
Valve prevents the backflow of blood.
Can you please tell me 2 advantages and 2 disadvantages of tearing down old
houses in the middle of a city to create a park.
Extra points and braniest will be given.
Answer:
Advantages: you have more space, and you can build more easily a park.
Disadvantages: people might die when you tear it down, and you need to pay a whole bunch of money .
Explanation:
The endomembrane system is composed of
Answer:
=niberghb4yahf erusifnruesz bguia8ysbu9vtgbuiyvc
Explanation:
vs vhg syzvcyufdzs dbshsf vcryesg
u r welcome t}{ot
Answer:
The endomembrane system (endo = “within”) is a group of membranes and organelles (Figure 1) in eukaryotic cells that works together to modify, package, and transport lipids and proteins.
Fruit flies feed on decomposing fruit.
The smell of the fruit attracts the fruit flies.
Design an investigation to find out if the smell of decomposing apples attracts fruit flies more than the smell of decomposing bananas.
Include experimental details in your answer and write in full sentences.
(6)
Please someone help i will give you full ratings
Answer:
Hypothesis: the smell of decomposing apples may attract fruit flies more than the smell of decomposing bananas.
Experiment: two separated fruit fly populations with a sample size statistically significant (N: 500 or higher) must be grown in clean boxes. Subsequently, the fruit fly populations should be simultaneously released in a tube that connects the two boxes with other two boxes containing: -Box 1: apples in decomposition and -Box 2: bananas in decomposition. After one hour, the fruit boxes must be simultaneously closed and the fruit flies must be counted. Finally, it is necessary to apply a statistical index in order to calculate the significance between groups (i.e., fruit flies closed in both fruit boxes).
Positive control: fruit flies released and counted in boxes containing apples and bananas in normal conditions.
Negative control: fruit flies released and counted in clean boxes.
Theory: the scent of breaking down apples may draw in natural product flies more than the scent of breaking down bananas.
Experiment:
Two isolated natural product fly populaces with a test measure measurably critical (N: 500 or higher) must be developed in clean boxes.
Hence, the natural product fly populaces ought to be at the same time discharged in a tube that interfaces the two boxes with other two boxes containing: -Box 1: apples in deterioration and -Box 2: bananas in decay.
After one hour, the natural product boxes must be at the same time closed and the natural product flies must be checked.
Positive control: natural product flies discharged and tallied in boxes containing apples and bananas in ordinary conditions.
Negative control: natural product flies discharged and numbered in clean boxes.
Experimental DetailsExperimental information are collected through dynamic mediation by the analyst to create and degree alter or to make distinction when a variable is modified.
Test information regularly permits the analyst to decide a causal relationship and is ordinarily projectable to a bigger populace.
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The diagram below shows fossils in three layers of rocks.
Picture shows three layers of rocks labeled Layer A, Layer B, and Layer C from bottom to top. Each layer of rock has a fossil.
Which of these conclusions is most likely correct about the organisms found in the layers of rocks?
The organism in Layer A is more complex than the organism in Layer B.
The organism in Layer B is more complex than the organism in Layer C.
The organism in Layer C is a modern form of the organism in Layer B.
The organism in Layer A is a modern form of the organism in Layer B.
Answer:
c
Explanation:
not sure about what does complex means, but if we according on theory of superposition - the top layer of rocks is younger than bottom
it means that the toppest layer is modern
We can observe three strata of fossil-bearing rocks in the diagram. We must take into account the idea of fossil succession in order to determine the conclusion regarding the organisms identified in these layers.
The theory of fossil succession holds that fossils found in rock layers are placed in a specific order. The oldest fossils are found in the bottom layers, while the youngest fossils are found in the top layers, which represents the relative ages of the fossils.
The conclusion that "the organism in Layer C is a modern form of the organism in Layer B" is most likely accurate based on this premise. As a result, the creature in Layer C reflects a more recent or evolved form of the organism in Layer B and existed before the organism in Layer B.
Overall, the concept of fossil succession aids in our comprehension of the relative ages and evolutionary connections of the creatures found in various rock layers.
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Animals that eat plants get the energy stored in the plants and use it for things such as moving around. However, only a small fraction of the energy in the plants gets converted to useful energy for the animal. Most of the energy is lost to heat. How can this situation be used to support the idea of the law of conservation of energy?
A. A The amount of energy used by the animals, added to the amount of energy lost to heat, equals the amount of energy from the plants eaten by the animal.
B. B While some animals get their energy from plants, there are also many animals that get energy by eating other animals, and still other animals that eat both.
C. C All the energy lost to heat by animals provides the heat energy that plants need to live and grow, allowing them to make their own food.
D. D When plants and animals die, their energy goes into the soil, where growing plants can absorb it, turn it into food, then transfer this energy to animals.
Answer:
A. A The amount of energy used by the animals, added to the amount of energy lost to heat, equals the amount of energy from the plants eaten by the animal.
Explanation:
The law of conservation of energy states that "energy can neither be created nor destroyed but can only be changed from one form to another". This means that during the energy transfer cycle, energy cannot be created or destroyed by any process, however, it can only be changed from one form to another via the different processes undergone by living organisms.
This question describes how animals get food needed for their life processes by feeding on plants. However, they (animals) make use of only a little fraction (about 10%) of the total energy in plants they feed on, because most of the energy (about 90%) is lost as heat when the plant undergoes metabolic activities.
This situation describes the law of conservation of energy in the statement that "The amount of energy used by the animals, added to the amount of energy lost to heat, equals the amount of energy from the plants eaten by the animal" because it shows that energy cannot be created neither can it be lost, hence, the sum of the energy that was converted to heat energy by plants and the energy utilized by the animal will give the total amount of energy initially present in the plant before the animal fed on it.
Which statement describes the impact of ocean currents on climate?
Ocean currents create changes in the temperature of air over land masses.
Ocean currents cause the temperature of air over large bodies of water to change.
Ocean currents move cold water from the equator to the poles, creating cool weather regions.
Ocean currents carry warm water from the poles to the equator to create warm weather regions.
Save and Fyit
Ways
Answer:
2
Explanation:
An ocean current is defined as the continuous or permanent movement of sea water which is caused by different forces such as the coriolis effect, wind, temperature, breaking waves and salinity differences.
Ocean currents play important role in climate changes of large water bodies as they transport cold water to the tropics from the poles and precipitation and warm water from the equator back toward the poles. Ocean current restricts uneven distribution of sunlight reaching earth surface which influence the temperature of air above water bodies. If there will be no ocean currents, the temperature of water bodies will be very hot and very cold at poles.
Hence, the correct option is 2.
Answer:
Ocean currents cause the temperature of air over large bodies of water to change
Explanation:
Which materials are excreted through sweat glands in the skin?
Answer:
carbon dioxide, hydrogen, and water
salt, urea, and water
urine, alcohol, and water
fats, ammonia, and water
Answer:
Not A absolutely not A
Explanation:
What does an urn-shaped age pyramid represent? A. a stable population growth B. a low birth rate C. a low death rate D. a growing population
Answer: B
Explanation:
because it’s supposed to show a declining population
Answer:
B. a low birth rate
What does flora and fauna mean in terms of science?
Answer:
Flora refers to plant life, while fauna refers to animals!
Explanation: