Answer:
genetic drift I'm pretty sure
Explanation:
have an amazing day!!!!!!!
Answer:
mass extinctions
Explanation:
Biology 1
Food web
Food chain
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14. The elements in group_
are the most reactive metals.
15. The elements in group_
are the most reactive nonmetals.
16. The elements in group_
are very unreactive.
17. The elements in group_
react very violently with water.
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.
Need help with this question, thanks :)
Answer:
A. White dwarf
2.
The stomata relate to by
allowing oxygen to enter the plant
Answer:
Stomata have two main functions, namely;
They allow for gas exchange acting as an entryway for carbon dioxide (CO2) and releasing the Oxygen (O2) that we breath. The other main function is regulating water movement through transpiration.Explanation:
This is for an ecosystem project and the ecosystem is the forest, what r 5 producers?
Answer:
for the forest your primary producers will be any types of plant: trees, bushes, bromelaids, fungi. and liana.
How does the tilt of a planet affect its temperature?
2. Full-sized wings are the typical phenotype for Drosophila. Which of the following events most likely led to the
existence of the short-wing allele in Drosophila?
A. a change in the shape of a chromosome
B. a change in the DNA sequence of a gene
C. the insertion of a DNA strand during mitosis
D. the deletion of a chromosome during meiosis
Answer:
B. A change in the DNA sequence of a gene
Explanation:
How does energy transfer from the hot water to the cold air
Answer:
humidity and evaporation
Explanation:
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Answer!!!
True or False: Trampling of plants by animals is an example of a biotic factor.
Answer:
false
Explanation:
i am sorry if it is wrong
The trampling of plants by animals is not an example of a biotic factor, while animals and plants are examples of biotic factors. Hence, it is false.
What are biotic factors?A living thing that alters its surroundings is referred to as a biotic factor. Examples of organisms found in a freshwater habitat include algae, fish, amphibians, and aquatic plants. A particular ecosystem is the result of the interaction of biotic and abiotic components.
A living entity that influences another organism in its ecosystem is referred to as a biotic factor. Examples include the plants and animals the organism eats as food and the animals it consumes.
The trampling of plants by animals is not a biotic factor while living organisms and plants are biotic factors. Hence, it is false.
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1. You have set up a cell-free transcription system in a test tube. By mixing DNA, RNA polymerase, sigma factors, ribonucleotides and other essential substances you are able to make mRNAs identical to those made under a variety of conditions in the cells from which these components were isolated. What would happen if you were able to remove the sigma factor first added to the tube and replace it with another sigma factor
Answer:
Different messenger RNAs (mRNAs) would have been produced
Explanation:
Sigma factors are protein subunits that form bacterial RNA polymerases and they are responsible to initiate RNA synthesis. The number of sigma factors is variable between different bacterial species. For example, Escherichia coli contains seven sigma factors, while Bacillus subtilis has at least 17 sigma factors, which control the transcription of different genes. These factors determine the specificity of the RNA polymerase to the target gene promoter regions and then control transcription initiation.
The smallest blood vessels that connect arteries and veins, and allow blood to pick up
and drop off substances with surrounding cells.
What’s the answer????
A. Write two sentences explaining how carbon returns from the air to the ground.
Answer:
In the atmosphere, carbon is attached to oxygen in a gas which is called carbon dioxide and through the the process of photosynthesis, it is pulled from the air to produce food made from carbon for plant growth. And through food chains, the animals that eat plants get that carbon and so do the animals that eat those animals.
When an animal dies, their bodies as well as wood and leaves decaying brings the carbon into the ground.
Which statement concerning the climax stage of an ecological succession is correct?
A) It is the first community to inhabit an area.
B) It consists entirely of plants.
C) It persists until the environment changes.
D) It changes rapidly.
Answer:
C) It persists until the environment changes.
Explanation:
Hope this helps
The diversity of dogs today can be attributed to selective breeding,
O True
O False
What is the relationship between a zebra and a lion
Answer:
The Zebra's The Lion's Dinner
Explanation:
I don't really need to explain this much I don't think. The Zebra's the prey, and the Lion is the hunter. Thanks! Have a good day!
Answer:
the relationship between a zebra and a lion would be prey(zebra) and predator(lion).
Explanation:
the zebra is the prey because it is an herbivore and does not hunt other animals. the lion is the predator because it is an carnivore meaning it hunts other animals(usually weaker than said predator).
How does nectar increase the ability of plants to reproduce?
Answer:
nectar is very sweet juice which attracts insects.
when those insects suck the nectar the pollen grains sticks to the body of those insects and then when they fly and sit on the other flowers and then those pollen grains are then transferred to the stigma of that flower which then forms a zygote and then forms a new flower.
and this is how nectar helps to reproduce
5. The organs of the respiratory system include the trachea, the bronchi, the diaphragm, and the ___________________________.
Question 2 of 6 Which two pieces of data could indicate that a volcano is about to erupt? A. A decrease in the ocean level near a mountain range B. An increase in temperature near Earth's surface C. A change in the types of gas detected in the air D. A drop in average air temperature in one region
Answer:
Please identify your answer
what is the difference between the open-water zone and the deep water Zone
Please help!
10 points, it’s quick!
I will appreciate it
Question is:
Does friction affect the motion of an object and why?
After an outbreak of an illness, scientists use epidemiology to try to find *
A. the origin of a disease.
B. how the disease spreads.
C. how to prevent the disease from spreading.
D. all of the above
Answer:
D. all of the above
Explanation:
An organism is identified as having the characteristics of the genus "canis" while it's species is determined to be "lupus". Which answer choice would properly demonstrate the organism's scientific name using binomial nomenclature? A. canis lupus
B. Canis Lupus
C. Lupus canis
D. Canis lupus
E. lupus canis
Answer:
Explanation:
b I’m pretty sure
Answer:
The answer is D.
Explanation:
The Genus is capitalized whereas the species is not.
Color coat for roan cows (RW) shows codominance. A cow with a white coat has WW as its genotype. A cow with a red coat has RR as its genotype. A roan cow (RW) is crossed with another roan cow (RW), what fraction of the offspring will be white (WW)?
Answer:
1/4
Explanation:
What characteristics do you think could be used to classify different kinds of single-celled organisms? Write your ideas here
Answer: flagellum, a plasma membrane and organelles.
Explanation: In that sense, it can be difficult to find traits that they all share. Still, Project Oceanography at the University of San Francisco indicates that single-celled organisms have a number of common characteristics, including the presence of flagellum, a plasma membrane and organelles.
Flagellum, a plasma membrane and organelles classify different kinds of single celled organism and prokaryotic organism.
What are the different features of prokaryotic cell ?Prokaryotic cell are single celled organism, do not have membrane bound organelles and its size varies from 0.2 μm – 2.0 μm.
Here the Cell wall is present but True Nucleus is absent, the cell wall is mainly involve in photosynthesis and provide protection to cell, the ribosomes are Smaller in size having 70s type and spherical in shape.
Circular DNA is present as genetic material in prokaryotes, Mitochondria is absent in prokaryotes, the reproduction usually occur by binary fission and some times it occurs through conjugation.
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I need help with this. Ty
Answer:
1. They can not make their food during photosynsheis because they have no chlorophyll.
2, Fungican be beneficial because it helps us produce some of our favorite foods. (ex:yeast for pizza) Fungi can also help to control infections with antibiotics.
3.There are some variaties of fungi that can be harmful and even can give us skin reactions.
4. Fungi can adapt to any weather but if the tempature is too cold, they will go into a deep sleep.
5.Life would be impacted because without fungi, it would be harder to find rich soil to grow crops.
Explanation:
What group is the first species to arrive in ecological succession?
A. Intermediate
B. Pioneer
C. Climax
Answer:
B. Pioneer
Explanation:
The first species to arrive are fast-growing “weedy species,” such as lichens or small annual plants, which create the first layers of soil as they decompose.
Answer:
B. Pioneer
Explanation:
The pioneer group is the first species to arrive in ecological succession. Hence, option (B) is the correct answer.
You are observing a woodland habitat and take note of a few trophic
relationships. You identify a few species of ferns that are being eaten by beetles.
You are also able to observe a snake in the process of eating a small species of
finch. You analyze your notes later and realize you missed a part of the food
chain. What part are you missing?
A. Tertiary Consumer eating Producer
OB. Secondary consumer eating Tertiary Consumer
C. Producer eating Primary Consumer
D. Secondary Consumer eating Primary Consumer
By analyzing the notes, one can say that in the given scenario, secondary consumer eating primary consumer is missing. The correct option is D.
What are consumers?A consumer in a food chain is a living being that consumes organisms from another population. A heterotroph is a consumer, and an autotroph is a producer.
As in the notes it is mentioned that ferns are eating beetles, and snakes are eating finch. It is lacking secondary consumers eating primary consumers.
Thus, the correct option is D.
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What is the usefulness of
categorizing Earth's history
into the geologic time scale?