Answer: Natural selection leads to evolution because the traits of those who are able to reproduce influence future generations genetics and gradually lead to these passed on traits becoming the normal state of being, thus causing the species in question to evolve.
Explanation:
Which direction do molecules move across a membrane based on concentrations inside and out of the cell?
Griffith injected with two different strains of bacteria in
his search for the genetic material.
Answer:
a. Mice
Explanation:
mice was used by Griffith in his investigation
What would be the answers for 33-34?
33. Look at the following strand. Is this. Chromosome or vene mutation
34. Look at the following strand. What type of mutation?
Please help
Answer:
chromosome
or venue mutations
examples of respiratory diseases
Respiratory Diseases include:
•asthma
•chronic obstructive pulmonary disease (COPD)
•pulmonary fibrosis
•pneumonia
•lung cancer
•Emphysema
•Pleural Effusion.
3. If there are 60 cardinals in a 4 square km area, what is the population density?
60 cardinals per square kilometer
60 cardinals
15 cardinals per square kilometer
240 cardinals
Answer:
15 cardinals per square kilometer
Explanation:
60 are total in 4 square kilometers
To find how many there are in only 1 square kilometer divide 60/4
and you get 15 as a result
2. Claim, Evidence, Reasoning Generalize which communities were most positively affected and which were most negatively affected by the addition of soil invertebrates.
Agricultural communities are positively affected with the addition of soil invertebrates due to enhance of the soil structure.
How do invertebrates affect soil?Soil invertebrates has a good affect on the decomposition rates, soil aeration, nutrient mineralization. It betters the soil so the plants can grow more easily with high productivity.
So we can conclude that agricultural communities are positively affected with the addition of soil invertebrates due to enhance of the soil structure.
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Explain the ruminant Process of digestion of animal farm animal?
Respond to the posts indicating your agreement or disagreement with their position and why. Feel free to bring in additional references to these reply posts.
post only irrelevent questions~
How is vaccination effective in reducing infectious diseases? Select all that apply.
Answer:
Explanation:
Question 6 is A because it is only that particular community and only a certain amount will most likely not have the disease
Question 5 is A, C, and D because they all explain why the vaccine is effective and how it might help out the community
What is the principle of base pairing
Explanation:
in dna cytosine pairs with guanine and adenine pairs with thymine add on rna adenine pairs with uracil
Describe one advantage prokaryotes cells have over eukaryotic cells
Prokaryotes and eukaryotes differ in the presence of the nucleus and the organelles. Prokaryotes are small in size and can easily reproduce and adapt.
What are prokaryotes?Prokaryotes are primitive simple cells that are characterized by single cells with no distinct nucleus and membrane-bounded organelles. Cyanobacteria and bacteria are examples of prokaryotes.
The simple structure of the prokaryotes makes them adapt to environmental changes faster than the complex eukaryotic cell. They have a quick reproduction rate and short life cycles, unlike plants and animals.
The simple and small system of the prokaryotic cell allows the movement and diffusion of the ions and molecules easily. They are extremophiles and can survive harsh environments.
Therefore, small and simple prokaryotic cells are advantageous over eukaryotic cells.
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Mr. and Mrs. Kolar want to help their 12-year-old daughter Karen
resist peer pressure to smoke. They encourage Karen to brainstor
ways to refuse a cigarette in different situations that might come
up. What thinking skill are the parents helping Karen build?
-handling a hypothetical situation
-role playing
- memory
-transitivity
They encourage Karen to brainstorways to refuse a cigarette in different situations that might come up, thinking skill are the parents helping Karen build -handling a hypothetical situation.
What is Active peer pressure?Active peer pressure occurs when your friends explicitly persuade you to do something. Examples are offering and forcing you to drink then criticizing for refusing it. Forcing you to attend a party even your parents do not agree.
On the other hand, passive peer pressure happens within a person's want to fit in to his/her colleagues. It is further classified into social modeling and perception.
Thus, option "A" is correct.
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Which of the following is true about the efficiency of energy transfer in an ecosystem?
a. The more energy the organism requires, the more efficient the energy transfer.
b. All energy transfers have the same efficiencies.
C. The less energy the organism requires, the more efficient the energy transfer.
d. The most efficient energy transfers are in large, warm-blooded animals.
Please select the best answer from the choices provided
O A
OB
OC
OD
Answer:
Option C.............
change active voice to passive
NONSENSE REPORT
please answer AsAp
Answer:
We've just attended a birthday party
you locked the door
Explanation:
English lesson
Where is the 3' end for the bottom strand of this DNA molecule? (A, B, C or D?)
How do hypertonic, hypotonic, and isotonic solution affect the size of cells? Explain Osmosis and Diffusion.
When a cell is submerged in a hypertonic solution, water escapes and the cell shrinks. There is no net water flow in an isotonic environment, hence the cell size does not vary. Water will enter a cell when it is placed in a hypotonic environment, causing it to swell.
What are hypertonic solutions?A hypertonic solution is one where there is greater concentration of solute outside the cell than inside the cell. Since water follows the most solute, it leaves the cell. This causes animal and plant cell membranes to shrivel up. The plant cell walls remain intact but animal cells will suffer more.
What are hypotonic solutions?Hypotonic solutions is when water molecules move from a high water potential to a low one because of diffusion.
What are isotonic solutions?Isotonic solutions are those solutions that have the same osmotic pressure at a given temperature.
What are cells?A cell is the smallest basic unit of all living organisms. Cells provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized food function. Cells also contain the body's hereditary material (DNA) and can makes copies of themselves.
Part 2:Osmosis and DiffusionOsmosis is the movement of water across the cell membrane, where the water goes from a higher concentration to a lower concentration. It plays an important role in activation, growth, and differentiation of T and B lymphocytes, macrophages, NK cells and other non-hematopoietic cell types.
Cellular diffusion is the process that causes molecules to move in and out of a cell. Diffusion is important as it allows cells to get oxygen and nutrients for survival. In addition it plays a role in cell signaling which mediates organism life processes.
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
Help? ASAP pleaseeeeeeee
Answer:
Homologous structures define similarly structured body parts among organisms that serve different functions. They show common ancestry; an example would be a human arm and horse leg (both made of bone, but different uses).
Analogous structures define differently structured body parts that serve the same function. They do NOT show common ancestry. An example would be a whale fin & dolphin fin; one is made of bone and the other cartilage, but they are both used to swim).
Human blood is considered a multiple allele trait meaning an individual can have either (A,
B, AB, or O). Which phenotypic probability would be expected between a cross of a male
with Type O and woman with Type AB?
a. 50% Type A, 50% Type B
. b. 50% Type A, 50% Type O
50% Type AB, 50% Type 0
d. 50% Type B, 50% Type O
c.
Answer:
A. 50% Type A, 50% Type B
Explanation:
To answer this we can draw a punnett square.
Since o if recessive, it can only be expressed if it is not masked by a dominant allele. Therefore the male with type O blood has the genotype oo. A and B are co-dominant, so the woman has genotype AB.
_ | A | B
o |Ao | Bo
o | Ao | Bo
Since A and B are dominant alleles, they will mask the o allele. Therefore genotype Ao will be a Type A phenotype, and genotype Bo will be a Type B phenotype.
Therefore, the phenotypic probabilities for this cross is 50% Type A, 50% Type B. Hence, the answer is A.
Hope this helped!
The table lists several examples of evolution.
1. evolution of tooth buds in birds
2. evolution of sequences in DNA and RNA
3. evolution of bipedalism in Homo sapiens
4. evolution of molecular oxygen for living beings
Which examples characterize organic evolution?
Answer:
evolution of bipedalism in homo sapiens
Identify the parts used in an electric circuit.
Answer:
Every circuit is comprised of three major components:
a conductive "path," such as wire, or printed etches on a circuit board;
a "source" of electrical power, such as a battery or household wall outlet, and,
a "load" that needs electrical power to operate, such as a lamp.
Explanation:
3During menstruation, the body sheds extra tissue from:
A Ovaries
B Fallopian tubes
C Fertilized eggs
D The uterus
Which statement describes how the image represents the concept of a common?
Nutrient pollution can cause algae to grow.
Wildlife is negatively affected by algal blooms.
Runoff from many farms can cause water pollution.
Regulations can prevent the pollution shown in the picture.
Answer:c
Explanation:
Water pollution is the introduction of pollutants either naturally or due to human activities. Runoff from many farms can result in water pollution.
What are the causes of water pollution?Water pollution is the contamination of water sources with some pollutants which make the water unusable for the purposes like drinking, cooking, cleaning, swimming, and other activities.
These substances can be chemicals, bacteria, parasites, etc. All sorts of pollution make go to the water directly or indirectly.
One of the prevalent sources of water pollution is runoff from many farms.
Thus, the correct option is C.
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The mother is homozygous recessive and the father is homozygous dominant. Using the letter m for magical powers, what is the RATIO for their offspring?
please help!!! marking brainleist
Which best describes the structure of a DNA molecule?
O A. Two strands of DNA joined by nitrogenous bases
O B. One long strand of amino acids
O C. Two strands of amino acids joined by nucleic acids
D. One long strand of nucleic acids

Answer:
A. two strands of DNA joined by nitrogenous bases.
Explanation:
what type of muscle tissue is found only in the heart?
Answer:
The cardiac muscle is only found in the heart.
How deep is the root system of a giant sequoia?
4 meters (13 feet)
20 meters (60 feet)
40 meters (130 feet)
80 meters (260 feet)
The sequoias root system is wide spreading, but shallow. There is no taproot. A mature sequoia's roots can occupy over 1 acre of earth and contain over 90,000 cubic feet of soil.
where are your taste buds?
Answer:
tongue is the answer....
50 points
Look at the food web shown below. which organisms get energy from producers?
a. squid
b. zooplankton
c. sperm whales
d. phytoplankton
Trophic webs involve energy transference through different organisms occupying different levels. These are producers, consumers (herbivores and carnivores), and decomposers. Option B. Zooplankton
What is a trophic web?The trophic web is the interaction between different organisms involving the transference of energy when some of them feed on the other ones.
The ones placed at lower levels pass energy to the ones at the higher levels.
Organisms at each level feed on the preceding one and become food for the next one.
• The first link corresponds to a producer organism -autotroph-.
• The following links are the consumers -heterotrophs-: herbivores and carnivores.
• The last links are the decomposers that degrade organic matter from dead organisms.
Because it is a web, all organisms are in equilibrium until a change occurs. When a sudden change affects any of the involved links, there can be a cascade effect on the web.
Any change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.
In this trophic web, we can see that the producer is phytoplancton (first link).
Phytoplancton is eaten by zooplankton and shrimp (second link). They are primary consumers that feed on phytoplancton.
The correct answer is b. zooplankton.
a. squid ⇒ They get energy from shrimp
b. zooplankton ⇒ They get energy from phytoplankton
c. sperm whales ⇒ they get energy from squids
d. phytoplankton ⇒ they get energy from sunlingh.
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When should most agricultural crops be fertilized?
A In the spring
B. In the fall
C. In midsummer
D. Throughout the growing season
Answer:
A
Explanation:
in the spring
Fertilizer is most effective when used on plants at their peak growing cycle.
