What is needed for evolution to take place?
Answer:
genetic variation
Explanation:
The limiting nutrient to plants is often
A. usable nitrogen
B. protein
C. liquid water
“Your assignment is to discuss in writing at least two techniques you use (or will use or will suggest to others) to help handle mental stress. Include at least two references you use to support your techniques. One reference can be your textbook.”
**I will do the textbook part**
Answer:
some of techniques I know•^••Exercise Working out regularly is one of the best ways to relax your body and mind....•Relax Your Muscles. When you're stressed, your muscles get tense. ...•Deep Breathing. ...•Eat Well. ...•Slow Down. ...•Take a Break. ...•Make Time for Hobbies. ...•Talk About Your Problems.Help pleasee | A damselfly nymph sheds its skin several times, as it grows into an adult. Which statement explains why it does this? No links!!!
A. It is a mammal.
B. It is an invertebrate.
C. It goes through complete metamorphosis.
D. It goes through incomplete metamorphosis.
Answer:
D. It goes through incomplete metamorphosis.
Explanation:
Damselflies do not hide away inside a pupa to transform into their adult form. Instead, they shed their skin several times as they grow, changing shape a little each time. This process is called incomplete metamorphosis.
PLEASE HELP !!
ILL GIVE BRAINLIEST
NO LINKS OR FILES.
Answer:
I think that the answer would be C.
Explanation:
Its saying how could she best monitor the impact of the manufacturing plant on populations in this ecosystem. She could best monitor it by collecting data.
Describe the differences and similarities between lecithin and cephalin. Match the words in the left column to the appropriate blanks in the sentences on the right. ResetHelp Lecithins and cephalins are both sphingolipids; they consist of glycerol with fatty acids forming bonds with the first and second groups. The third group of the forms a with phosphoric acid, which forms another bond with an amino alcohol. In lecithins, the amino alcohol is ; in cephalins, the amino alcohol is usually .
Answer:
Here, we have a composition passage and we are required to fill in the with missing words. The missing words are highlighted in bold format and underlined.
Lecithins and cephalins are both glycerophospholipids; they consist of glycerol with fatty acids forming ester bonds with the first and second hydroxyl groups. The third hydroxyl group of the glycerol forms a phosphate bond with phosphoric acid, which forms another phosphate bond with an amino alcohol. In lecithins, the amino alcohol is choline; in cephalins, the amino alcohol is usually ethanolamine.
Explanation:
Lecithin is a chemical complex composed primarily of fatty acids, glycerol, phosphoric acid, and choline. It can be present in egg yolks, soybeans, sunflower seeds, and plant seed cells and is completely normal. Soybean and sunflower lecithins contain much more important fatty acids than rapeseed lecithin, making them nutritionally more useful.
Phosphatidylethanolamine, also known as cephalin, is a phosphoglyceride that, like phosphatidylcholines and lecithins, is a component of biological membranes. A glycerol residue esterified by two fatty acids and a phosphoethanolamine residue gives rise to phosphatidylethanolamines. They're made by combining CDP-ethanolamine with diglycerides and releasing a CMP molecule. Phosphatidylcholines are formed when S-adenosylmethionine methylates the amine in ethanolamines. They're mostly found in the inner layer of plasma membranes' lipid bilayers.
natural selection vs artificial
Answer:
Please read the explenation for I must go into detail to explain this.
Explanation:
So before I answer your question, I am going to explain what the two things are.
Natural selection:
Natural selection is the evolution of traits in a species due to changes in genetics that is mainly caused by enviormental problems and changes.
If this is a bit confusing, here is an example:
Lets say that a Mandarin beatroot lizard is being killed off by the Mandarin carrot bird because all the trees in the area have turned yellow. 100 years from the time this happened, the Mandarin beatroot lizard that's population was 85% red and 15% yellow is now 90% yellow and only 10% red.
This is because of natural selection. THe Mandarin carrot bird was killing a large portion of the red population. The yellow population was killed only occasionaly. When the Madarin beatroot lizard went to breed, there were more yellow lizards breeding than red lizards. If you know how genetics work, then you know that in simple terms, this means more lizards will be yellow in the next genetration.
Slowl;y as the generations passed, more and more yellow lizards were bred and born. 100 years later, over generations and generations, the population was almost coimpeltly yellow.
Artifical selection:
Artifical selection is where the human race selects a species and bred specific organisms of that species so that the specific trait being bred for is more evident in the species.
Again, if this is confusing, here is an example:
The lab NV-110 was taking bearlybubble wolves with shorter noses and breeding them together. After 30 years, and many generations, the bearlybubble wolves had noses that were half a inch shorter than the orginal bearlybubble wolves. When the new wolves were let into the forest they had been taken from, half of the died in the first week due to starvation.
The humans took specific traits in a species and bred them together, this process was repeated over 30 years. The specific trait of the new generation of orgniasms has been changed, but this change affected the orgnaisms survive, and was dentrimental to the species.
So now knowing the two things, what do you think the difference is? Think about ti for a minute before reading more.
The difference betweent the two types of selection is:
Artifical selection can harm or possibly nuetral for the organism, wheareas natural selection will be helpful or nuteral to the organism.Artifical selection involves humans, wheareas naturals election does not,Artifical selection does not need any specific change in the enviorment or world to happen, wheareas natural selection does.Artifical selection is usally quicker than natural selction for artificial selection is purposful breeding, whereas natural selection is by-chance breeding.I hope this make sense to you, I can try to make this simpler or more detailed if you want me to. ;)
help me with this asap please.
Answer:
I don't understand the question you sent me
Which phase describes "movement away from each other" on a molecular level?
A) Solid
B) Gas
C) Liquid
D) Methane
Answer:
B
Explanation:
gas particles are faster and move free
Calculate the Simpson’s diversity index using the information below.
A 3 column table with 3 rows. Column 1 is labeled Species with entries American bullfrog, Pool frog, Common toad. Column 2 is labeled Pond 1 with entries 300, 335, 365. Column 3 is labeled Pond 2 with entries 20, 49, 931.
What is the Simpson’s diversity index for pond 1? Round to the hundredths place.
Answer:
0.67
Explanation:
Got it right on edge
Answer:
the answer is 0.66
Explanation:
The evolutionary species concept defines a species as: A. a group of populations that have shared a past and will have a shared future B. reproductively isolated populations C. smallest monophyletic taxa D. morphologically similar populations
Answer:
The correct option is A.
group of populations that have shared a past and will have a shared future
Explanation:
This is because evolutionary species concept is a concept that indicate a form of ancestry descendants or lineage of populations that descend from the same ancestors possessing similar characteristics which were inherited from the ancestry and these traits are evident in the future.
50 POINTS 4. The age of the Canyon Diablo meteorite was determined by
A) carbon-14
B) uranium-235
C) hydrogen-3
D) potassium-40
Answer:
The answer is uranium have an awesome day!
5. Which of the following statements is true about natural systems?
Answer:
im sorry i dont see and question or anwsers to help maybe tryb reposting
Explanation:
Answer:
B. Producers are at the bottom level of both the energy pyramid and the biomass pyramid.
Explanation:
Both the biomass pyramid and the energy pyramid have producers at the bottom.
Producers account for most of the biomass and most of the available energy in any given ecosystem.
At which position is the northern hemisphere experiencing spring?
Point A
Point B
Point C
Point D
Answer:
c
Explanation:
Each node, or intersection, on a cladogram represents a/n _______ between two species.
a branch of alleges typically once studied in higher education
Answer:
Branch of knowledge.
Hope it helps!!!
Describe the competitive exclusion principle and its effects on competing species
Plz help me well mark brainliest if you are correct!
What is correct regarding trans fatty acids
Answer:
They raise LDL and lower HDL
Explanation:
What are the three parts of a neucleotide
Each nucleotide, in turn, is made up of a nitrogenous base, a pentose sugar, and a phosphate.
Which event occurred during the Space Race
Answer:
I think it is Sputnik not sure but try it
Answer: The U.S launched Explorer 1 into space.
Explanation:
Submit your summary about a federal law and a summary about a state law. Remember to proofread your work before submitting.
Which of the following are amniotes? O Birds, reptiles, and amphibians O Reptiles, birds, and dogs O Cnidarians, reptiles, and mammals O Amphibians, birds, and cnidarians
Answer:
reptiles, birds and animals
Explanation:
amniotes are animals whose embryo develops in an amnion and chorlion and have an allanton.
they lay their eggs on land or retain them within the mother.
AG CLASS
Which of the following professionals is most likely to be hired to mow the grass and lawns of an urban park and perform common maintenance chores?
landscape architect
landscape contractor
landscape worker
landscape designer
10. What causes root pressure, and what is the function of root pressure for the plant?
Answer:
Root pressure, in plants, a force that helps to drive fluids upward from the soil into the water-conducting xylem vessels. It is primarily generated by osmotic pressure in the cells of the roots and is partially responsible for the rise of water in plants.
Explanation:
Plants have many characteristics. What is responsible for these characteristics? Select all that apply. inherited from parents inherited by sibling plants affected by the environment affected by soil position
Answer: Select A,B,D that’s the answer
Explanation: thank me! Your welcome!
[please] put these in order
Answer: The arrangements and correct order of the above described genetic and behavioural adaptations includes:
A.) Camouflage: This is a survival adaptation by which an animal blends in and is hidden in its surroundings.
B.) Mimicry: This is an organism exhibiting characteristics similar to one known to be dangerous.
C.) Tropism: This is the growth or movement of an organism ( usually plant) in response to a stimulus.
D.) Venom: This is a poison secreted by animals for either defensive or offensive purposes.
E.) Mutualism: This is the interaction of two organisms where both benefits.
F.) Commensalism: This is the interaction of two organisms where one is helped and the other is neither helped nor harmed.
Explanation:
In the study of organisms and it's environment, they are able to adapt through genetic and behavioural mechanisms. Adaptation of defined as the ability of organisms to become fitted to its environment by modifying or changing its features. These features may be structural or behavioural.
STRUCTURAL ADAPTATION: Almost every part of the body of a living organism is structurally adapted to its mode of life. They are structurally adapted for the following specific functions:
--> Escape and defence: many animals use CAMOUFLAGE to remain unnoticed by potential predators. While some others are capable of producing poisonous VENOMS which may become offensive to the predators. Also many harmless organisms may possess structural behaviours that may MIMIC dangerous organisms thereby keeping their predators at arms length.
--> obtaining food: organisms needs to possess some structural features that will enable them obtain food in their environment. This usually leads to forming various feeding relationship ( which may be MUTUALISTIC or COMMENSALISM) with one another to be able to obtain food for survival.
BEHAVIOURAL ADAPTATION: Behaviour is everything an organism does in response to changes in its environment. Plants do exhibit behavioural adaptations and a typical example is the phototrophic movement of plant shoots which is a type of TROPISM.
Traits or structures that likely developed from common ancestors are called _______ structures.
Answer:
I believe these are called homologous structures.
Explanation:
Homologous structures are similar to each other and likely descend from common ancestors.
what is the term for an organisms ability to maintain constant internal conditions even when environmental conditions change?
Answer:
Homeostasis refers to stability, balance, or equilibrium within a cell or the body. It is an organism's ability to keep a constant internal environment.
Explanation:
Keeping a stable internal environment requires constant adjustments as conditions change inside and outside the cell
Answer:
Homeostasis refers to stability, balance, or equilibrium within a cell or the body. It is an organism's ability to keep a constant internal environment. Homeostasis is an important characteristic of living things. ... The adjusting of systems within a cell is called homeostatic regulation.
Plz help me I am timed!!
Plzzz well mark brainliest!
Answer:
Its A
Explanation:
