What is passive smoker ?
Answer:
hope it helps you
Explanation:
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In a population:
A. Are organisms that live all over the world
B. Are autotrophs
C. All organisms are of different species
D. All organisms are the same species
Answer:
D. All organisms are the same species
Explanation:
The organisms of the same species in a particular area is called population.
1 point
Vhich of the following is an example of cohesion?
hydrogen bonding
water attracted to the side of a glass tube
water droplets attached to a spider web
water forming raindrops
Answer:
water forming raindrops
Which is an example of a vestigial structure?
A) The flipper of a whale
B) The wings of a bird
C) The tailbone of a human
D) The eyes of a bat
Answer:
C) the tailbone of a human
Humans no longer have tails due to evolution because we don't need them. The other answers are body parts that are useful to those animals.
Hope this helps!
1.DNA is a molecule composed of two chains in form a ____________ compose by______________, ____________ and pentose. And the structure and function of genes.
Answer:
DNA is a molecule composed of two chains in form of a DOUBLE HELIX compose by ORGANIC NITROGEN CONTAINING BASE, PHOSPHATE GROUPS and PENTOSE.
Explanation:
Nucleic acids are found in all living cells. They are composed of strands made up of repeating units called nucleotides. Each nucleotide consists of
--> a five carbon sugar( PENTOSE)
--> a phosphate group
--> an organic nitrogen containing base: adenine, guanine, cytosine or thymine.
The two types of nucleic acids include:
--> Deoxyribonucleic acid ( DNA) and
--> Ribonucleic acid ( RNA)
Deoxyribonucleic acid ( DNA) is found in chromosomes located in the nucleus of cells.
STRUCTURE OF DNA
The DNA molecule consists of two strands that curve spirally to form a double helix structure. The strands are held together by hydrogen bonds between the base side arms. Each base on one strand will only pair with a specific base on the other strand: hence guanine will only pair with cytosine and adenine with thymine.
FUNCTIONS OF DNA
It stores the organism's hereditary traits and directs the day to day metabolic activities of each cell in the organism.
chlorophll absorbs what colors
Answer: Violet and orange
Explanation:
They absorb light of other wavelengths with less intensity.
Loni makes a diagram to help organize what she has learned about the gas laws.
Which label belongs in the region marked X?
involves changes in temperature
has a constant volume
shows an inversely proportional relationship
does not describe pressure changes
Answer:
Shows an inversely proportional relationship.
Explanation:
The Boyle's law belongs in the region marked X whereas the other circle belongs to Charles law. There is inverse relationship between the two circles or these two laws because in Boyle's law, temperature is constant while on the other hand, in Charles law pressure is constant instead of temperature. In Boyle's law, pressure of a gas is inversely with its volume whereas in Charles law, the volume of a gas is directly proportional to its absolute (Kelvin) temperature.
What is the function of the stigma?
A. To catch pollen grains
B. To produce eggs
C. To attract insects
Explanation:
A. to catch pollen grains
is yr correct ans.
hope it helps
stay safe healthy and happy..Answer:
A. To catch pollen grains
Explanation:
The function of the stigma is to catch the pollen grains.
What are the raw materials needed for cellular respiration?
A. carbon dioxide and glucose
B. water and carbon dioxide
C. sugar (glucose) and oxygen
Answer:
C. sugar (glucose) and oxygen
Explanation:
The sugar (glucose) and oxygen are the main raw materials involved in the cellular respiration process.
Question 7 (1 point)
In which organelle does DNA replication take place?
a
lysosome
mitochondria
nucleus
ribosome
The answer should be nucleus
Why is phosphorus a limiting growth factor in terrestrial ecosystems?
Answer:
Because the quantities of phosphorus in soil are generally small, it is often the limiting factor for plant growth. ... Phosphates are also limiting factors for plant-growth in marine ecosystems, because they are not very water-soluble. Animals absorb phosphates by eating plants or plant-eating animals.
have a good day
#BRAINLESTPhosphorus is a limiting growth factor in terrestrial ecosystems because the quantity of phosphorus in soil are generally small it is often the limiting factor for plant growth.
What is the use of phosphorus in ecosystem?Phosphorus-based fertilizers boost the growth of plants on land, phosphorus in the ocean increase the production of microbes and small marine plants called phytoplankton, which compose the base of the marine food chain.
Phosphorus, like nitrogen, is a critical nutrient required for all life. The most common form of phosphorus used by biological organisms is phosphate (PO4), which plays major roles in the formation of DNA, cellular energy, and cell membranes (and plant cell walls). Phosphorus is a common component in commercial fertilizers.
We can say that phosphorus are very important factor for plant-growth in marine ecosystems because they are not soluble in water.
Therefore, Phosphorus is a limiting growth factor in terrestrial ecosystems because the quantity of phosphorus in soil are generally small it is often the limiting factor for plant growth.
Learn more about phosphorous here:
https://brainly.com/question/16044323
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The respiratory system involves the intake of carbon dioxide into the body and the release of oxygen from the body.
A. True
B. False
Answer:
The answer is false, we intake oxygen and exhale carbon dioxide
Explanation:
Answer:
Hi, there the answer false
Explanation:
What does the theory of evolution tell us about living things?
A) The environment can make them change rapidly over a short period of time. B)They create fossils when they die
C)Their environment makes them change slowly over time.
D)They can give us clues about extinct species. (science 7th grade) (100 POINTS)
Answer:
Their environment makes them change slowly over time
Explanation: I took the test and got it correct.
The agents of wethering erosion deposition and the rock cycle will slowly change the fossils over time. They may damage them or burry them deep into the layers of earth. Over time, as they age, new landforms will me made ontop of them. This is why they use the fossils to determine the age of the land. I hope this helps :)
which of the following is an abiotic factor?
A. Predation
B. Rainfall
C. Cropping
D. Grazing
E. Migration
Answer: The answer is B. Rainfall
Explanation:
Good luck and hope this helps :)
The bacteria moves to areas of high oxygen concentration. Which process in the cell causes the bacteria to form these groups.
Answer: photosynthesis
Explanation: This is because it is a plant cell due to it having chloroplast
What phase of mitosis is shown in the diagram below?
Answer: Its A. Prohase
Explanation:
Answer:
A . it's the prophaseExplanation:
prophase is the phase of mitosis in the diagram
What is ecological succession?
A. Change that happens over time in an ecological community
B. A way a life
C. One person giving another person power
Answer:
A. Change that happens over time in an ecological community
Explanation:
Ecological succession is the change that happens over time in an ecological community. So, option (A) is the answer.
Answer:
A. Change that happens over time in an ecological community
Explanation:
Ecological succession is the gradual process by which ecosystems change and develop over time. Nothing remains the same and habitats are constantly changing.
There are two main types of succession, primary and secondary.
Primary succession is the series of community changes which occur on an entirely new habitat which has never been colonized before. For example, a newly quarried rock face or sand dunes.
Secondary succession is the series of community changes which take place on a previously colonized, but disturbed or damaged habitat. For example, after felling trees in a woodland, land clearance or a fire.
Help meeeeee plsssss! :)
Biodiversity is important to human society because it *
Answer:
Biodiveristy is important to humans because it provides a good functioning ecosystem that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services.
Explanation:
Wasp stings are alkaline. Which substance would help relieve this injury?
A) Vinegar
B) Toothpaste
C) Tap water
D) Ammonia based window cleaner
Answer:
A
Explanation:
because is a good solution for injuries
which examples represent abiotic factors affecting biotic factors? Check all that apply
Answer:
ash from a volcanic eruption kills new plant growth.
warm water from a nuclear power plant causes overgrowth of algae.
a river floods and deposits tree pollen along its banks.
Explanation:
Ecosystem consist of biotic and abiotic elements. Biotic refers to all living organisms while abiotic refers to all non-living elements of the environment. Living organisms depends on abiotic factors such as light, temperature, water and soil etc for their growth and survival. In the above answer, Ash of volcano, warm water and rivers are abiotic elements while plant, algae and pollen are biotic elements.
Which is not true of selective breeding?
Selective breeding always produces unhealthy
offspring
Selective breeding can be used to weed out weak
genes.
Selective breeding can be used to pass on
desirable genes.
Selective breeding has been used by humans for
thousands of years.
Answer:
selective breeding always produces unhealthy offspring
Explanation:
false becasue its mostly healthy and dominant genes
Identify the gases obtained at cathode and anode during this process
1. What is facial reconstruction? Why is it used?
Answer:
Facial reconstruction is when you examine the bones of your face to figure out changes to make.
How do you calculate the number of neutrons?
A. The same as the atomic number
B. Equal to the number of protons
C. Equal to the number of elections
D. Take the mass number and subtract out the atomic number
Answer:
D
Explanation:
D is correct take the mass number and subtract it
Answer:
D. Take the mass number and subtract out the atomic number
Explanation:
We should take the mass number and subtract out the atomic number to calculate the number of neutrons.
A mutation that can be inherited by offspring would result from A) random breakage of chromosomes in the nucleus of liver cells B) a DNA base substitution in gametes during meiosis C) abnormal lung cells produced by toxins in smoke D) sun exposure of skin cells
Answer:
B) a DNA base substitution in gametes during meiosis
Explanation:
What is the complementary mRNA sequence of this DNA sequence?
DNA sequence: TAC
The hard outer covering of a snail's ventral foot is called the
Answer:
the operculum.
hope this helps :-)
Drag each tile to the correct location.
Identify which questions can be answered through science and which cannot.
Is it right or wrong to use genetic
engineering to produce new food
products?
What are the most common social
settings that tend to produce
accomplished artists?
Do the types of organisms found in
the fossil record appear in consistent
sequences in different parts of
the world?
If a new gene is added to the genome
of a tomato species, will that species
be more resistant to insects?
Are Michelangelo's paintings more
impressive than Rembrandt's?
Should humans use biotechnology
to bring extinct organisms from the
Answer:
What can be awnsered by science are question 1,3, and 4 (Going top from bottom). The rest cannot be answered by science. ((I'm not 100% but I'm pretty confident)))
Tobacco smoke contains carbon monoxide. What problem does this cause?
1 point
A)The carbon monoxide irritates the airways, causing bronchitis
B) The carbon monoxide combines with haemoglobin in the red cells, reducing the ability of the blood to carry oxygen
C) The carbon monoxide causes lung cancer
D) The carbon monoxide causes the blockage to the bronchi
Answer:
B
Explanation:
It directly enters the bloodstream and displaces oxygen in red blood cells.
