Answer:
14 Hydrogen is a very reactive gas, and the alkali metals are even more reactive. In fact, they are the most reactive metals and, along with the elements in group 17, are the most reactive of all elements.
15 The halogen group of elements is the most reactive of the nonmetals. It is also the most reactive group of all chemical elements. Fluorine is the most reactive element in this group. Halogens are highly reactive because they are all electronegative.
16 Group 8A — The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name comes from the fact that these elements are virtually unreactive towards other elements or compounds.
17 Group 1: Alkali Metals
Group 1 elements are called alkali metals because of their ability to displace H2(g) from water and create a basic solution. Alkali metals are also known to react violently and explosively with water.
help!
look at photo to answer
Think of a forest ecosystem. List two biotic factors that compete for the same abiotic factor.
Explanation:
Plants, animals.
They both require/need water, therefore, they both compete for water.
Bio homework help
pedigrees
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What is the usefulness of
categorizing Earth's history
into the geologic time scale?
From the act of pollinating flowers, a bee population gains the benefit of a 0.06 growth rate increase per month. However, the costs imposed by the flower (bees occasionally getting stuck, time spent pollinating the flower instead of pollinating other species, etc.) is a 0.02 reduction in growth rate per month. The flower gains benefits from the pollination that enhance its population growth rate by 0.05 per month, but it incurs costs (feeding the bees, damage done by the bees) that reduce its growth rate by 0.07 per month. Which of the following statements about the relationship between the bees and the flowers is true?
a. It is a host?parasite relationship in which the bees are the hosts and the flowers are the parasites.
b. It is a host?parasite relationship in which the flowers are the hosts and the bees are the parasites.
c. It is an amensalism
d. It is a commensalism.
e. It is a mutualism.
Answer:
Mutualism
Explanation:
All organisms in nature interact with other organisms in different ways. Symbiotic interactions involve a relationship between two or more organisms of different species in which one or all of them turn to be beneficiated by that relationship. These species create permanent mutual dependence.
Symbiotic interactions include:
• Amensalism refers to a biological relationship established between two organisms, in which one of them avoids the growth, development, or survival of the other one. In this interaction, one of the organisms seems to be strongly affected by the other one. Meanwhile, the other organism does not seem to be affected at all.
• Commensalism: In this case, the fitness of only one of the species seems to increase, while the other species is not affected at all, nor positively or negatively. The unaffected species might provide food or refuge to the other species, which is beneficiated.
• Parasitism: In this case, one of the species is beneficiated, while the other suffers a consequence, reducing its fitness. These interactions are mainly about nutrition, although there might be other benefits too. Some parasite species might coexist with their host, while some others might get them ill to the point of causing death.
• Mutualism: The interaction is favorable for both species. Their fitness increases with these interactions, although they do not need this relationship to survive. The degree of benefits might vary among species or might be equal.
In the relationship bee-flower, no one parasites the other. No one affects negatively the fitness of the other one. And both species seem to be equally beneficiated (bees find a source of food, and flowers get to be fertilized). This is a mutualistic relationship.
The most dangerous property of cancer cells is that they:
1. divide slowly
2. spread throughout the body
3. do not divide by mitosis
4. do not live very long
What is the relationship between a chromosome and DNA?
Chromosomes manufacture DNA.
Chromosomes are made of DNA.
DNA is made of chromosomes.
DNA manufactures chromosomes.
Answer:
(B) Chromosomes are made of DNA.
Explanation:
i took the test <3
Chromosomes are made of DNA which shows the relationship between a chromosome and DNA. So, the correct option is B.
What are Chromosomes?A chromosome is indeed a lengthy DNA molecule that contains all or a portion of an organism's genetic code. The very long, thin DNA fibres in most chromosomes are covered with packing proteins; in eukaryotic cells, the histones are the most significant of these proteins.
Each cell's nucleus contains chromosomes, which are structures that resemble threads and contain the DNA molecule. Each chromosome is constructed from DNA that has been tightly wound around proteins called histones numerous times to support its structure. The fact that DNA is a component of chromosomes demonstrates the connection between chromosomes and DNA.
Therefore, the correct option is B.
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The symbol below represents a______
. It is usually associated with______
O Warm Front, warm and moist weather
Occluded front, a mixture of warm and cool weather
Stationary front, days of precipitation
Answer:
Occluded front, a mixture of warm and cool weather
Explanation:
What is meant by nucleoid?
Answer:
The nucleoid is an irregularly shaped region within the prokaryotic cell that contains all or most of the genetic material.
10. What is the net force?
5 N
5 N
5N
Answer:
The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out.
Answer:
Formula of Net Force
FN is the force acting on a body. When the body is at rest, the net force formula is given by, FNet = Fa + Fg.
https://byjus.com/net-force-formula/
will help you out here
Explanation:
3. The air you breath in provides _____________________ for your cells
Answer:
Energy
Explanation:
Cells use the oxygen that you breathe in to provide energy for themselves.
Answer:
Energy
Explanation:
it's provides energy to enable the taking place of all living processes that occur in the cell
Can someone please help me answer this question? Thank you.
Answer:
The correct answer is -
C is parent cell
A is under meiosis
B is a sex cell
Explanation:
In the given question, the diagram shows three different cells in which the cell C is the parent cell that is about to undergo meiosis that can be identified by the quantity or numbers of chromosomes present in the cell which is highest among all.
The cell that is already in the meiosis is cell A, it is the cell that is produced after meiosis 1 in the meiosis cell division as it has half number of chromosomes to parent cells.
The sex cell or gamete is cell C that has a haploid number of chromosomes which makes this process reduction division
Bio homework help
pedigrees
had to reupload because of bots
NO ANSWERS THAT REQUIRE ME TO OPEN A FILE OF DOWNLOAD. NO FILES AT ALL!!!!!!!!!!!!!!!!
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Students from a high school science class visited the desert of Southern California and investigated a sample of
sedimentary rock from the region.
Which question can they answer through scientific
investigation?
O Which fossils are found in different layers of sedimentary rock?
Why are sedimentary rocks prettier than other kinds of rocks?
Which layers of a sedimentary rock have the most interesting fossils?
- Why should scientists study sedimentary rocks?
Answer:
Which fossils are found in different layers of sedimentary rock?
Explanation:
Thats the answer i hope it helped! :)
Answer:
Which fossils are found in different layers of sedimentary rock?
Explanation:
Which fossils are found in different layers of sedimentary rock?
In the 19th century, the agricultural revolution increased food production while the industrial revolution improved methods of
transporting food and other good additionally, advances in medicine, sanitation and nutrition have decreased the death rates further.
These factors combined to produce the rapid growth of the human population today. Yet other factors impact population demographics:
they include economic, political, religious conditions as well as resource availability.
Consider the demographics for two countries: one with a low-income, almost impoverished population; they other an economically well-off
country. What factors listed would contribute to the decline in birth rate and the larger +75 population in the high income country? Check all
that might apply.
Females have access to educational resources
Better nutrition: increased food supplies and distribution
There has been widespread emigration during the last few decades
Inadequate health care for women during pregnancy and for their babies after birth
A high incidence of infectious disease
Good sanitation and personal hygiene
Answer:
A Low Income Impoverished Population could be Uganda and a Economic Well off country could be the Netherlands
Explanation:
Can anyone one helps me to fill in the 3 blanks with herbivore and carnivore and scavenger
Help!!
Answer: The kangaroo is a herbivore , the ants are scavengers and what I think is an ant eater is the carnivore.
Explanation:
Chyangras are only farmed in cold regions. Give reasons.
Answer:
hope this helps
Explanation:
Pashmina wool is a natural adaptation of the Chyangra goat that protects the animal from extreme weather conditions around the Himalayas. That is why they are farmed only in cold regions.
Who are Chyangra Goats?Chyangra goat is a type of famous breed of mountain goats which is found in the high altitude areas of the Himalayan region. It produces the world's most expensive and finest quality of luxurious cashmere wool. It is also used for meat. They are more famous for the development of the world famous pashmina wool industry in Nepal and India.
Pashmina wool is a natural adaptation of the Chyangra goat that protects the animal from extreme weather conditions around the Himalayas. The specialty of pashmina is that it can retain enough heat to protect the animal from the severe cold and strong wind of the high mountains all year round.
Thus, Pashmina wool is a natural adaptation of the Chyangra goat that protects the animal from extreme weather conditions around the Himalayas. That is why they are farmed only in cold regions.
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An aquifer that allows groundwater recharge is known as?
A)
unconfined aquifer
B)
confined aquifer
C)
saturated aquifer
D)
unsaturated aquifer
Answer:
b. unconfined aquifer
Explanation:
edge 2021
does anybody know what question 3 answer is? ❤️
How does RNA polymerase determine which strand is the template/antisense strand?
Answer:
Although RNA polymerase must recognize sequences on the template strand, by convention we draw the DNA sequence and regulatory signals on the "mRNA-like" strand. (This makes it simpler to directly determine the sequence of the resulting RNA.) The upper strand of DNA is the "mRNA-like" strand.
I hoped this helped out!^^
How does stopping at checkpoints benefit the cells?
which of the following is least affected by seasonal environmental conditions?
Answer:
The seasonal environmental conditions are very poor , during summer season temperatures are very high.
The organism that is least affected by seasonal environmental conditions is a bacterium, as bacteria are single-celled prokaryotes that are capable of adapting to a wide range of environmental conditions.
What is the significance of bacterial and plant living conditions?Bacteria can survive in extreme conditions such as high salinity, low pH, and other environmental conditions and can easily switch from aerobic to anaerobic metabolism depending on the availability of oxygen in the environment. Plants and animals are more sensitive to seasonal environmental conditions as they need temperature, light, water, etc.
Hence, the organism that is least affected by seasonal environmental conditions is a bacterium, as bacteria are single-celled prokaryotes that are capable of adapting to a wide range of environmental conditions.
Learn more about the bacteria and plants here.
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Self-pollination is when the pollen from one plant lands on the stigma in the same plant. What do you think the other type of pollination is called?________
(hint: This is where the pollen from one plant lands on the stigma of a different plant.)
A. asexual reproduction
B. vegetative reproduction
C. agriculture
D. dormancy
E. cross-pollination
Answer:
E.. Cross-pollination
Answer:
E. cross-pollination
Explanation:
What do you think the other type of pollination is called cross-pollination
If a researcher only wanted to examine the relationship between exercise and grade point average,
to test the variables.
The complete question is as follows:
If a researcher only wanted to examine the relationship between exercise and grade point average, _________ would be used to test the variables.
A. correlation analysis
B. regression
C. hypothesis
D. central tendency measures
Answer:
The correct answer would be - A. correlation analysis.
Explanation:
To find the relationship between two variables the correlation analysis is the statistical method is used. It is used to find the what and how the one variable is related to the other variable in this method.
It is used to evaluate the relationship between any two quantitative variables.To examine the relationship between exercise and grade point average,b this method would be best as it also shows how strong is the relationship of variables.
The question is which ecosystem would be more likely to survive if a disease killed the grasses
Please help me I beg you
Answer:
I believe the answer is 3
Explanation:
Can a person with Rh-blood safely receive blood from either Rh+ or Rh-blood?
Answer:
Yes
Explanation:
Since the person already has Rh in their blood, it does not matter whether the donated blood is Rh+ or Rh-. getting Rh- blood for a Rh+ person is not harmful, unlike when it is vice versa.
Hope this helps :)
The definition of the water cycle is
A. rivers draining into the ocean.
B. water moving between reservoirs.
C. transpiration.
Answer:
The answer should be B
Explanation:
When looking at the water cycle you will see that a main part of the cycle is it moving in throughout the earth. reservoirs can be a main part of this process. i hope this helped.
Yellowstone National Park is located on top of a large active volcano. Heat rising from the underground magma chamber of the volcano fuels unique ecosystems within the park's geysers, hot
springs, and mud spots. If the volcano were to become inactive, the stability of ecosystems in the park's thermal features would
A decrease
B. increase.
С
decrease, then increase
D. increase, then decrease.
Answer: A
Explanation:
Decrease, Btw if I'm wrong I'm sry lol
But I think it's A
How many molecules are there
Answer:
about 129-130
Explanation:
When asked for an example of an adaptation, a student explained, "A turtle's hard shell is an adaptation. A long time ago, a few turtles were able to make their shells harder in order to protect themselves from predators and then passed the trait of harder shells on to their offspring." Do you agree or disagree with this student? Explain why.
Answer:
I agree with the student by species