There are five signs of a chemical change:
Color Change.
Production of an odor.
Change of Temperature.
Evolution of a gas (formation of bubbles)
Precipitate (formation of a solid)
hope it help! and have a good day :)
What are thermohaline currents?
Answer:
temperature and salinity
Explanation:
Which is not true about meiosis?
A. The chromosomes in the daughter cells are half the number from the parent cell.
B. The chromosomes in the daughter cells are the same number as a parent cell
C. The only cells that will undergo meiosis will become sperm or egg cells used for reproduction
D. The shuffling of genes happens in meiosis.
Answer:
B. the chromosomes in the daughter cells are the same number as a parent cell
A species is introduced into a new environment with plentiful resources and few predators. What
will a graph of its population look like at first, and what is this pattern of growth called?
If a species is introduced into a new environment with plentiful resources and few predators, it will get acclimatized to the environment and then grow with very little or no hindrance. The graph of its population will look like letter J and the pattern of grow is called exponential.
An exponential growth will be achieved by a population if:
Resources are unlimited: this will also eliminate competitionThere is little or no predators in the environmentNo recurrent natural disaster taking some members of the population resulting in a more death than birth rates.Hence, with other things being equal, a species introduced into a new environment with few predators and unlimited resources will continue to grow unlimitedly after a few period of getting acclimatized to the environment.
More on population growth can be found here: https://brainly.com/question/18415071
do plants and animals rely on each other through the energy cycle?
Answer: The energy cycle for life is fueled by the Sun. The main end product for plants and animals is the production of highly energetic molecules like ATP . These molecules store enough immediately available energy to allow plants and animals to do their necessary work.
Explanation:
Why is it important for gametes to have half as many chromosomes as normal body cells?
Answer:
It is important for gametes to have half as many chromosomes as normal body cells because when the gametes go through fertilization and create the zygote, it will have the correct number of chromosomes.
Explanation:
5. Neurons have long projections to transmit impulses. What is the name of these projections? Answer:
Answer:
Their name is "Axon"
Explanation:
An axon is a long, slender projection of a nerve cell, or neuron, in vertebrates, that typically conducts electrical impulses known as action potentials away from the nerve cell body.
Infiltration is the process that helps to add water to the Earth's
groundwater supply. What happens during infiltration?
A. The water is heated by the sun and floats into the air.
B. The water is drawn into the ground by the force of gravity.
C. The water changes from a gas to a liquid.
D. The water moves along the land downhill, due to the force of gravity, to a larger body
of water like a river, lake, or ocean.
Answer:
B.The water is drawn into the ground by the force of gravity.
Which class of
macromolecules does DNA
and RNA belong?
Why would it be important for biochemical engineers to understand photosynthesis?
It is very important for a biochemical engineer to know the process of photosynthesis because they are working with chemical reactions that plants, animals, and etc go through. This is ideal to know about because this is also one of the most well known processes and it can relate to many others.
A keystone organism is vital because many others depend on it for survival.
True
False
Answer:
Good works
Explanation:
Chapter 3 Questions
STUDY
Play
a
Click card to see the definition
Primary succession happens after a catastrophic event destroys a formerly occupied region and leaves no life behind.
a) True
b) False
Primary succession happens after a catastrophic event destroys a formerly occupied region and leaves no life behind.
a) True
b) False
Click again to see the term
c
Click card to see the definition
Secondary succession occurs after an event damages a community but does not wipe it out such as a forest fire.
c) True
d) False
Secondary succession occurs after an event damages a community but does not wipe it out such as a forest fire.
c) True
d) False
Click again to see the term
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Created by
SeanimacTEACHER
Tags related to this set
Biological Control Of Invasive Species
The Environment
Invasive Species
Terms in this set (15)
The statement "A keystone organism is vital because many others depend on it for survival" is definitely true.
What do you mean by Keystone species?The keystone species may be defined as a species within a community that has a role out of disproportion to its abundance.
If a keystone species is removed from any community, it may result in the decline of species richness of that particular community.
Therefore, the statement "A keystone organism is vital because many others depend on it for survival" is definitely true.
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What is Nashville's recycling rate?
Answer:
24%
Explanation:
What does albedo mean?
Answer:
Albedo means The proportion of the incident light or radiation that is reflected by a surface, typically that of a planet or moon.
If a DNA molecule contains 30% cytosine, what % of the molecule should be thymine?
Answer:
20%
Explanation:
cytosine = guanine = 30%
cytosine + guanine = 60 %
adenine + thymine =100% - 60% = 40 %
thymine = 20%
If a DNA molecule contains 30% cytosine, then 20% of the molecule should be thymine.
What do you mean by DNA?DNA stands for deoxyribonucleic acid. It is considered as the genetic material of most organisms. It is a complex molecule that bears genetic information.
Amount of cytosine = 30%
According to Chargaff's rule, A=T, C=G.
∴ Guanine = 30%
Now A + T = 40%
Therefore, the amount of thymine molecules is 20%.
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The fusion (combining) of an egg cell, from a female member of a species,
with a sperm cell, from a male member of the same species, is known as
A:mitosis
B:crossing-over
C:fertilization
D:binary fission
Answer:
C
Explanation:
Which statements describe the roles of fungi?
Answer: There is no pic showing the statements but here some info to help
Explanation:
Fungi can be decomposers, parasites, recyclers, and symbionts. They often form mutualist relationships with neighboring organisms to provide carbon dioxide, water, and minerals. Fungi also can be saprophytes that live on dead matter (for example: rotting wood) to break down and obtain energy from organic compounds.
-C
1. Enter text here.
Carbon
12.011
Enter text here.
What does it mean if elements are in the same group?
Enter text here
What does it mean if elements are in the same period
Enter text here
Answer:
--> 12.011 is the relative atomic mass number of carbon.
--> elements in the same group have the same number of electrons in their outermost shells
--> elements in the same period have the same number of electron shells.
Explanation:
An element is a pure chemical substance that contains the same type of atoms which cannot be broken down into smaller substances by any chemical reaction. Example of an element is Carbon, hydrogen, Helium, Nitrogen.
Carbon has the relative atomic mass number of 12.011 in the periodic table. This is as a result of carbon having six protons, six neurons and six electrons. Carbon being an element that has isotopes, the number of decimal seen is its relative mass compared to 1/12 the mass of one atom of carbon-12.
Periodic table shows the properties of elements that vary in a regular manner. The elements in the same GROUP have the same number of electrons in their outermost shells. Electrons are arranged in shells which forms the outermost part of an atom around the atomic nucleus. Electron are arranged in shells called K,L,M,N outward from the nucleus with maximum number 2,8,18,32 respectively. For example, atoms in group 1 include hydrogen, Lithium, Sodium and potassium. When arranged in shells, they all have the same number remaining in their outermost shell which is 1. This makes them to have similar chemical properties.
Elements in the same period have the same number of electron shells. Example of elements in the same period include sodium, magnesium, aluminium silicon, phosphorus. When their atoms are arranged in shells, they have the same number of shells irrespective of the atomic number.
HELP ASAP!!!!! I’m bein timed :(
Acid deposition kills things ___.
A. very slowly
B. within minutes
C. within hours
D. at an average rate
Acid deposition kills things at an average rate.
What is Acid deposition?When sulfur dioxide (SO2) and nitrogen oxides (NOX) are released into the atmosphere and carried by wind and air currents, acid rain is the result.
Nitric and sulfuric acids are created when the SO2 and NOX react with water, oxygen, and other substances. Then, before hitting the ground, they combine with water and other substances.
The majority of the SO2 and NOX that contribute to acid rain originates from burning fossil fuels, however a tiny amount comes from natural sources like volcanoes.
Therefore, Acid deposition kills things at an average rate.
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I need help! on my last question
Answer:
I think it's C becuse if it has happened to the mutated animals parents, and the parent's parents, then it's most to happen to new generations/offspring.
(not completely sure though)
Answer:
Probably the third one
Help! Can you use Cladistics in a sentence?
(Here's the definition to help): a method of classification of animals and plants according to the proportion of measurable characteristics that they have in common. It is assumed that the higher the proportion of characteristics that two organisms share, the more recently they diverged from a common ancestor.
Answer:
Dr . Gaffney pioneered the use of cladistics in turtle research.
Explanation:
The bird's foot delta in this region changes over time. What form this feature?
•river sediments
•underwater plants
•salt from salt water
•sand from the Gulf of Mexico
Answer:
River sediments
Explanation:
List 3 of your characteristics that are caused by your genetic information
Answer:
Parents pass on traits or characteristics, such as eye colour and blood type, to their children through their genes. Some health conditions and diseases can be passed on genetically too. Sometimes, one characteristic has many different forms. For example, blood type can be A, B, AB or O.
So the answers must be from you like what's your blood type, eye colour and if you don't know your blood type you can ask your parents
Explanation:
Hope this helps :D
Which molecule contain the most stored energy?
A.proteins
B.Sugars
C.vitamins
D.fats
Answer:
A. proteins. and or could be D. Fat
You bend your arms at the elbow and forcefully press your palms into each other. Your hands do not move and the muscles of your upper arms
do not shorten, but tension greatly increases in them. This muscle contraction is described as being
Answer:
isometric contraction
Explanation:
Isometric contraction is a class of contraction where the muscle maintains a constant length as tension is produced, thereby the length of the muscles does not change during this process. Isometric contractions are performed without joint motion. They are appropriate for the rehabilitation of musculotendinous traumas due the muscle maintains a static position and contraction intensity can be controlled. This type of contraction is common for the muscles in the hands and arms.
any luck with this question ??
Answer:
Explanation:
When you have had the chickenpox virus once, the Antigen . Presenting . Cells (A.P.C) have the ability to produce antibodies that latch onto the chickenpox pathogen. This then attracts other white blood cells to perform phagocytosis.
A chicken pox vaccination will usually protect a person from chickenpox for the rest of their lives due to the white blood cells being able to tell when the pathogen of chickenpox has entered the body. This vaccine is essentially a dead form of chickenpox.
Im year 9 btw
GIVING BRAINLIEST AND EXTRA POINTS!! (U dont have to answer all of it :D)
The polar climate zone includes the areas of Earth near the _______________ and _______________ poles. The northern polar zone includes parts of __________________, _________________, and ________________. The southern polar zone includes __________________.
(Here is an image if needed):
The polar climate zone includes the areas of Earth near the North and South poles. The northern polar zone includes parts of Canada , United Kingdom, and Russia . The southern polar zone includes Antartica .
Answer:
south and north
Explanation:
how can a natural disaster evolution of a species.
Explanation:
The evolution of the species is accelerated by environmental disasters in which the decrease in population size, the shrinkage of habitats of species, and the increase in mutation rate simultaneously take place through global environmental disasters.
True or False:
Bacteria are Eukaryotes.
Answer:
Bacteria belongs to the Prokaryotes family of microorganisms.
Explanation:
The answer is false.
The given statement is False as the Bacteria are prokaryotes usually.
What are Prokaryotes?The cells falls majorly under two categories:
- Prokaryotes and
- Eukaryotes
The single celled bacteria falls under the category of Prokaryotes.
Components of Prokaryotes are:
These cells share common component with Eukaryotes such as
- Plasma Membrane which is an outer covering separating the cell's interior from its surrounding environment.
- Cytoplasm containing cellular components.
- DNA
- Ribosomes, helpful in synthesis of proteins.
A prokaryotic cells is simple, single celled organisms lacking nucleus or other membrane bound organelle.
Prokaryotic DNA is found in the central part of the cell in the darkened region called the Nucleotide.
The diameter of these cells are smaller than Eukaryotes and allows ion and organic molecules to quickly spread to other parts of the cell.
What are Eukaryotes?A eukaryotic cell has a membrane bound nucleus and other membrane bound compartments or sacs called organelles having specialized functions.
The word eukaryotes meant true kernel or true nucleus due to presence of membrane bound nucleus in these cells.
These are found in higher level organisms including plants, animals and humans.
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During a football game, you are starting to feel cold, your body starts to shiver. What is the path of communication between your nervous system and endocrine system to help your body stay warm?
Multiple choice question.
A)
Your sensory receptors in the nervous system recognize the external change in the environment and send a signal through the somatic nervous system to your muscles and glands and tell them to start shivering.
B)
Your sensory receptors in the nervous system are blocked due to the lower temperatures so the internal receptors know that something must be wrong. It works with the endocrine system to maintain homeostasis.
C)
Your sensory receptors in the nervous system recognize the external change in the environment and immediately send a signal through the autonomic nervous system to a gland that gradually communicates your internal body temperature is also changing. Both systems work together to maintain homeostasis.
D)
Your sensory receptors in the nervous system recognize the external change in the environment and send a signal through the autonomic nervous system to your muscles and tell them to start shivering. The endocrine system is useless.
E)
Your sensory receptors in the nervous system can’t recognize the external change in the environment and rely on the endocrine system to help them know when to communicate with the muscles to shiver.
Answer:
C)
Your sensory receptors in the nervous system recognize the external change in the environment and immediately send a signal through the autonomic nervous system to a gland that gradually communicates your internal body temperature is also changing. Both systems work together to maintain homeostasis
Explanation:
The answer basically gives you an explanation, but here is mine:
The nervous system works heavily with the brain by sending signals through nerves. The endocrine system secrete chemicals for wide ranges of things, but it does this with a message that is relayed the nervous system. Since in this problem the temperature is decreasing, then the nervous system will send a message to the brain and then the message gets sent to whatever system is needed to adapt to the temperature decrease which in this case it the endocrine.
This was pretty lengthy, but I hope it helps :)
In 1966, Dr Lynn Margulis formulated the endosymbiotic theory, which examines the cooperative existence of multiple prokaryotic organisms. What is the significance of such interdependence? (15.8) Inildin It provides insight into the now well understood interdependence in food chains and webs It shows that the first prokaryotic organisms lived in large communities It explains how organelles and eventually eukaryotic cells could have arisen It proves that different prokaryotic organisms mated to produce eukaryotic organisms
Answer:
It explains how organelles and eventually eukaryotic cells could have arisen
Explanation:
Goldfish in the 12” x 24” tank were given the same kind of food and the same amount of food as the goldfish in the 24” x 60” tank. Also, equal numbers of goldfish were present in each tank. Results indicate that goldfish raised in the 24” x 60” tank grew on average 1” longer than the goldfish in the 12” x 24” tank.