Answer: hybridisation between related species is unlikely to contribute to adaptive speciation.
Explanation: any population has natural genetic variation. The available resources are insufficient for all plants (and conversely, not all offspring survive). Natural selection favours variations better suited to the conditions.
Although hybridisation is more common in plants than animals, and can lead to speciation, adaptive radiation from an ancestral species is the general response to environmental change, such as from rainforest to savanna. There is low probability of selective advantage from hybridisation of two ancestral species adapted to niches within the original habitat when the conditions in those niches changes significantly.
Answer:
The correct will be C: The available resources do not support all the plants.
Which of these elements has an electron structure most similar to that of element X?
Answer:2
Explanation:
what molecules from proteins when linked together with covalent bonds
Answer:
Amino Acids
Explanation:
they link with each other through means of peptide bonds and as a result form proteins
Cellular respiration is the chemical basis of how cells release energy from foods. When you eat an apple, your cells extract energy. The text below explains how cells use cellular respiration to extract energy from an apple. Choose the parts of the sentence that are incorrect.
The apple first enters the digestive tract through the mouth, where digestion begins with chewing. Enzymes begin to break down the apple in the mouth. From the digestive tract, the glucose from the digested apple is absorbed into the bloodstream, where it is brought to cells throughout the body. In the chloroplast, the glucose begins cellular respiration. The molecules react with carbon dioxide to release energy. Oxygen is produced as waste
Answer:
chloroplast is def wrong
Explanation:
it is mitochondria
4. How did the pH of the water affect the hatching of the brine shrimp?
I
plz help me I will give brainlyest to first right answer
Answer:
Explanation:
1. Decomposition
2. Fungi
3. Evaporation
4. Precipitation
5. Condensation
6. Rhibizium
Answer:
1. decomposition
2. rhizoblum
3. evaporation
4. precipitation
5. condensation
6. fungi
respiration in echinoderms
Drag each tile to the correct box.
Sort the types of energy according to the order in which they move through this system:
Water stored in dams falls freely with the force to make a turbine move. The turbine moves and produces electricity. This electric energy is
supplied to homes. At home, we use electricity for heating, cooling, and lighting.
Put these in order:
Electrical energy
Light energy
Potential energy
Kinetic energy
Answer:
Electrical energy > kinetic energy > light energy > potential energy
Explanation:
Can natural selection occur? Why/why not?
Answer:
The reason why it occurs is when the organism doesn't have the desirable traits it needs to survive.
Explanation:
PART II
Direction: Write the symbols of some elements and the group number it belong to
Name
Symbol
Group Number
Iron
Silver
Mercury
Oxygen
Gold
Potassium
Xenon
Magnesium
Hydrogen
#pa help po
Answer:
Iron -> Fe - Group 8
Silver -> Ag - Group 11
Mercury -> Hg - Group 12
Oxygen -> O - Group 16
Gold -> Au - Group 11
Potassium -> K - Group 1
Xenon -> Xe - Group 18
Magnesium -> Mg - Group 2
Hydrogen -> H - Group 1
According to the bar graph, how many players averaged more than 30 points
per game?
Answer:
2 players
Explanation:
Answer:
2
Explanation:
= Arenas and Bryant
.........
Chemicals used in chemotherapy treatments to fight cancer can also harm cells in hair follicles and bone marrow.
What characteristic do these cels most likely share with cancerous cells?
O They form tumors.
O They spread through the blood.
• They divide rapidly.
O They contain a mutation.
A
Answer:
They divide rapidly
Explanation:
Some normal cells such as hair follicles cells, mouth cells, digestive tract cells, and bone marrow cells divide rapidly. In mammalians, hair follicle cells are cells localized in the skin, specifically in the dermal layer of the skin. In this region, epidermal cells that form the root of the hair divide rapidly by interacting with neuropeptides, hormones, and immune cells. On the other hand, the bone marrow is a spongy tissue found in bones that contain stem cells (which also divide rapidly). In consequence, it is well-known that high-dose chemotherapy treatments may damage these types of cells.
Would the movement of oxygen through the cells?
3. Characteristics of Water: Look at the picture below. Describe
at least 3 of the properties of water that are being shown.
Click to add text
Answer:
1.water is testless and colourless
Cyanide poisons cell by limiting the production of ATP through cellular respiration. Cyanide does this by blocking the enzyme that attaches electrons and hydrogen atoms to oxygen to form water.
Which stage of cellular respiration would this most directly affect?
A Acetyl CoA formation
B Electron transport chain
C Glycolysis
D Krebs cycle
HELPPPPPP ASAPPPPPPPP HELPPPP
Answer:
it is C. Little to No agintation
What TWO things cause denaturation of enzymes:
How many angels can dance on the head of a pin?
1This is a question that has been pondered over the centuries. Can it be answered using scientific method? Is it a scientific question?
The Goal of Science
2The goal of science is to answer questions about the natural world. Scientific questions must be testable. Which of these two questions is a good scientific question and which is not?
What is the age of our planet Earth?
How many angels can dance on the head of a pin?
3The first is a good scientific question that can be answered by radiometrically dating rocks among other techniques. The second cannot be answered using data, so it is not a scientific question. Which of the following would be considered a good scientific question?
SELECT AN ANSWER
A-Why do airplanes fly?
B-How much does a thermometer weigh?
C What is your favorite food?
D) How does size affect the speed of an object rolling down a hill?i
Answer:
D) How does size affect the speed of an object rolling down a hill?
Explanation:
i think
Explain how matter is cycled between plants and animals.
The food of come from autotrophic plant to animal through food chain. The energy cycles between the air and soil and plants, animals, and microbes occur by food web.
What are the components of food web?A food web is defined as the cyclical event of energy transfer among different trophic level of organism.
The major components are primary producers, primary consumers, secondary consumers, tertiary consumers, quaternary consumers
Primary producers are the green autotrophic plants and capture some of the solar energy and convert it into chemical energy by photosynthesis.
The net primary productivity (NPP) of energy is defined as the rate of photosynthesis minus the rate of respiration of plants.
Primary consumers or herbivores feed on producers constitute the second trophic level of the food web.
in third tropic level, Secondary consumers eat primary consumers where as tertiary consumers, quaternary consumers or predators, carnivores or omnivores, which are both plant- and animal-eaters, such as humans.
For more details regarding food web , visit:
https://brainly.com/question/2233704
#SPJ2
Butter is solid at room temperature because *
0 it has gone through a hydrogenation process.
Othey have double bonds in the hydrocarbon tails.
there are fewer hydrogens attached to the carbons.
there are more hydrogens attached to the carbons.
A old Cell is called what?
In starfish, the allele for brown coloring is dominant, and the allele for blue coloring is
recessive. For which parental genotypes are 100% of the offspring expected to be blue?
BB x bb
Bb x Bb
bb x bb
BB x BB
Answer:
C. bb x bb
Explanation:
B B B b
b Bb Bb B BB Bb
b Bb Bb b BB bb
100% Brown 75% Brown 25% Blue
B B b b
B BB BB b bb bb
B BB BB b bb bb
100% Brown 100% Blue
Hurricanes are generally: ___________.
a. Smaller than mid-latitude cyclones
b. Late summer and early fall storms
c. Areas of strong rainfall and winds
d. Larger than tornadoes
e. All of these
Answer:
The answer is option B "Late summer and early fall storms"
Explanation:
less tropical storms form into Hurricanes. A few great ecological conditions should be available to allow Hurricane. To start with, warm sea waters of in any event 80 degrees Fahrenheit should stretch out to a profundity of 150 feet or more. Warm surface temperatures along are insufficient for typhoon development; there must be a plentiful profundity of warm water to give energy to the tempest. Second, the environment should cool quick enough from the surface upward to permit soggy air to keep on being precarious and convect. Layers of warm air over top stop or "cap" tropical improvement. At long last, there should be minimal vertical breeze shear, that is, change in wind speed, between the surface and the highest point of the lower atmosphere. Solid breezes over top forestall tropical Hurricane development.
Please help me ?!!!!
Answer:
the last one I am guessing
Explanation:
If right can you give me brainiest
Hope you have a wonderful day:)
if some can help me with my biology final the whole 25
Answer:
add the answers if you dont know
Explanation:
Answer:
KC is looking at cells in biology class, but he doesn't know where they came from. He sees that the cells under his microscope have cell walls and chloroplasts. Therefore, KC is likely observing cell from:
A leaf that got blown onto the floor.
Plant cells are the only cells w/ chloroplast!
Explanation:
pick me as the brainliest
If a double-stranded segment of DNA has been found to have 23 purines and 15 thymines, how many guanines are there?
Answer: 4 Guanines
Explanation: Following Chargaff's ratio that describes the ration of purines to pyrimidines as 1:1, if there are 23 purines, it follows that there should be 23 pyrimidines; 15 Thymines should therefore be hydrogen bonded to 15 Adenines by complementary base pairing.
We are then left with 8 nucleotides composed of guanines and cytosines in complementary base pairs. This means that half that number (4) should be guanines and the rest cytosines.
The DNA is a double-stranded molecule, which is made up of purine, pyrimidine, a pentose sugar, and phosphate backbone. Chargaff's rule states that any species will have a stoichiometric ratio of 1:1.
The number of guanines in the double-stranded DNA is 4.
In the DNA, the base pairing occurs as:
The guanines bind with cytosine through hydrogen bonding. The adenine binds with thymine with two hydrogen bonds.In the given nucleotide, there are 23 purines (guanine and adenine). There are 15 thymines in the DNA molecule. Based on the Chargaff rule, the 15 thymines will bind to adenine, leaving only 4 guanines and 4 cytosines. Thus, there will be 4 cytosines left to bond with the guanines to achieve Chargaff's ratio of 1:1.
Therefore, the guanine in the nucleotides will be 4.
To know more about Chargaff's rule, refer to the following link:
https://brainly.com/question/19156457
A student wants to model convection currents in the Earth's mantle. Which of the following should the student use
O Layering three different types of Jello on top of each other.
O Placing whipped cream on top of a pudding mix
O Placing food coloring in a heated container of water
O Stirring cereal in milk.
PLEASE HELP!!! Will give brainliest
name three limitations to using an electron microscope to view an organism
you can't see the colour of organisms
you don't have the ability to analize living organisms
artefacts can be easily produced
Which of the following are solutions to slow down groundwater depletion?
a -Landscape with native plants
b- promote the use of water resources
c- encourage population growth
d- develop crops that require more water
Compare between a simple and compound microscope
Answer:
simple micro scopes or for seeing just small items and compound micro scope is for even smaller stuff!
Explanation:
A compound microscope allows you too see stuff like atoms they are super small and cant be seen by the naked eye so we need a strong tool called the compound microscope!
I need help please & show work??
Hydrogen - 3 is a radioisotope with a half life of 12.32 years. How long would it take a 40 g sample to decay down 2.5 g ?
Answer:
Whether or not a given isotope is radioactive is a characteristic of that particular isotope. Some isotopes are stable indefinitely, while others are radioactive and decay through a characteristic form of emission. As time passes, less and less of the radioactive isotope will be present, and the level of radioactivity decreases. An interesting and useful aspect of radioactive decay is half-life, which is the amount of time it takes for one-half of a radioactive isotope to decay. The half-life of a specific radioactive isotope is constant; it is unaffected by coTnditions and is independent of the initial amount of that isotope.
Consider the following example. Suppose we have 100.0 g of tritium (a radioactive isotope of hydrogen). It has a half-life of 12.3 y. After 12.3 y, half of the sample will have decayed from hydrogen-3 to helium-3 by emitting a beta particle, so that only 50.0 g of the original tritium remains. After another 12.3 y—making a total of 24.6 y—another half of the remaining tritium will have decayed, leaving 25.0 g of tritium. After another 12.3 y—now a total of 36.9 y—another half of the remaining tritium will have decayed, leaving 12.5 g. This sequence of events is illustrated in Figure 15.1 “Radioactive Decay”.
Explanation: