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Dr. Kettlewelll predicted that clean forests would have _____________ colored moths, and polluted forests would have _________ colored moths.
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Answer:
Kettlewell thought that if natural selection caused the change in the moth population, the following must be true: Heavily polluted forests will have mostly dark peppered moths. Clean forests will have mostly light peppered moths. Dark moths resting on light trees are more likely than light moths to be eaten by birds.
Dr. Kettlewall predicted that clean forests would have light-colored moths and polluted forests would have dark-colored moths. This is an example of natural selection.
What is natural selection?Natural selection is a phenomenon in which the fittest individual is chosen by nature. The animal can live and reproduce in that particular environment. An example is the peppered moth population.
The light-colored moths were found on the light-coloured bark, but their population started to decline after the pollution. In the polluted environment, they were easily chosen by predators. So only dark moths survived because they blended in with the polluted environment.
Following the end of the pollution, light colored moth increased again. Predators had a difficult time identifying the light moth because it blended in with the unpolluted environment. Hence, their population increases in unpolluted areas.
Hence, Dr. Kettlewall predicted that a clean forest would have a light-colored moth and a polluted forest would have a dark-colored moth.
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3. Why were germinating seeds used instead of dormant (non-
germinating) seeds?
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Answer:
An important function of seed dormancy is delayed germination, which allows dispersal and prevents simultaneous germination of all seeds. ... Many species of plants have seeds that delay germination for many months or years, and some seeds can remain in the soil seed bank for more than 50 years before germination.
What differentiates passive transport from active transport?
Group of answer choices
Molecules move down a concentration gradient during passive transport.
Passive transport involves molecules moving across the cell membrane.
ATP is needed for passive transport to occur.
Proteins have a role in passive transport.
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Answer:
The movement of molecules across a membrane without the input of energy is known as passive transport. When energy (ATP) is needed, the movement is known as active transport. Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration
Explanation:
Plants respond to all of the environmental stimuli listed except
A. the length of nights.
B. hormones.
C. loud noises.
D. temperature.
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Answer:
C - Loud Noises
Explanation:
Please mark as Brainliest
What r the 4 seasonal stages of the year ?
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Answer:
Spring, Summer, Winter, and Fall
Explanation:
Please mark me brainliest]
Answer:
Spring, Summer, Autumn (Fall) and Winter.
Explanation:
How do limiting factors most affect population size? stop population growth restrict population growth increase population growth decrease population growth
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Answer:
restrict population growth
Explanation:
Limiting factors of a population are those factors that constrict the growth of the population. They often act as a check on population growth.
Some of these limiting factors are:
Food Water Habitat of organismsFrom the giving choices, limiting factors have been clearly shown to inhibit population growth.
The lack of some of these factors checks the population, thereby impeding its growth.
Answer:
How do limiting factors most affect population size?
restrict population growth
Explanation:
correct on edge unit test
(03.01 LC)
Which of the following best describes the particles in an atom?
O Protons carry negative charge
O Neutrons carry positive charge
O Neutrons move around a nucleus
Electrons move around a nucleus
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Answer:
Electrons move around a nucleus
Explanation:
My dog says so so give me the fiv star
what is the answer?
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Answer:
[tex]\boxed {\tt 3}[/tex]
Explanation:
An element only has one type of atom and cannot be broken down by chemical means.
Let's analyze the answer choices.
1. This has two types of atoms, so it cannot be an element. It has more than one type of atom.
2. This has two types of atoms that are bonded together. It cannot be an element because there is more than one type of atom and the bonds can be broken.
3. This has one type of atoms, so it is an element.
Therefore the best answer choice is 3.
Please help I am stuck
Recreate the sequence that occurs in the carbon cycle beginning with carbon dioxide gas.
combustion
atmosphere
soil organic matter
fossil fuel
plant biomass
↓
?
↓
?
↓
?
↓
?
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Answer:
Carbon cycle is very important for the plants and animals that are divided into 4 steps and these steps are:
1.The carbon enters the atmosphere in the form of carbon dioxide.Example: respiration and combustion.
2.The carbon dioxide present in the environment is used by the plants and plants expel oxygen after the process of photosynthesis.
3. Animals present in the environment eat the plants and pass on the carbon in the food chain. They exhale carbon dioxide into the environment.The plants and the animals die after a certain period of time.
4. The body of plants and animals is consumed by decomposes and the carbon is returned into the atmosphere in the form of carbon dioxide else fossils of plants and animals are formed which contains carbon.
Explanation:
did the quiz
This food web represents a community in a rain forest.
If the beetles disappeared from this community, which changes would be
likely to occur? Select the three correct answers.
A. An increase in the number of strangler figs
B. A decrease in the population of sloths
C. A decrease in the number of boa constrictors
D. An increase in the population of fruit bats
E. A decrease in the population of poison dart frogs
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Answer:
A, C, E
Explanation:
If the beetles disappeared from this community, changes likely to occur include
an increase in the number of strangler figs, an increase in the population of fruit bats and decrease in the population of poison dart frogsThe beetles are insects which eat up strangler figs and a decrease mean an increase in its number.
The population of fruit bats will increase as they will have more strangler figs available for food.
Poison dart frogs will decrease because they feed primarily on beetles in the ecosystem.
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What evidence does not support the evolution of chloroplasts and mitochondria from prokaryotic cells?
A. O Fossilized remains of archaebacteria
B. O Double membranes of the organelles
c. Similar methods of reproduction
D. O Presence of circular DNA
Answers
Answer:a
Explanation:
The rate of a physical or chemical process
refers to the amount of product formed per
unit time is expressed as
(A) rate=
Sp
Ss
st
(B) rate=
др
ds
(C) rate=
8p
(D) rate
др
St
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Answer:
(A) rate=
Sp
Ss
st
Explanation:
The rate of chemical is a measure of the speed of a chemical reaction.
The measurement of the reaction rate is based on the disappearance of a reactant or appearance of a product with increasing reaction time.
Reaction rate is usually expressed in terms of a change in concentration of the chosen reactant or product per unit of time.
During a reaction, the concentration of the reactant decreases exponentially with time while that of a product increases exponentially with time.
Reaction rate = [tex]\frac{change in concentration of a reactant/product}{Time taken}[/tex]
Which molecule is most common in the human body?
O A. H2
B. N2
C. H20
D. CO2
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Choose the answer that is not a fossil.
a. a cow skeleton in the desert
b. dinosaur footprints preserved in mud turned to rock
c. a petrified T-Rex is found in Montana
d. a 400-million-year-old fish preserved in rock
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Which of the following statements is not part of the cell theory. 1. Cells are the basic unit of structure and function in all living things
2. All cells are produced from other cells
3. Only animal cells are composed of cells
4. All living things are composed of cells
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Answer:
your answer is option 3
How do you get the pH of a solution closer to neutral?
Answers
Answer: You can add neutral solutions with a pH of 7, like water. Water will dissolve the alkaline/acidic pH to near 7 and 8, which are safe to drink.
Hope this helps you!
NASA has discovered a new planet in a distant solar system. On this new planet, they have found a mysterious green slime. The green slime only grows at certain temperatures and under certain moisture levels. Scientists found that if they put the green slime in a freezer, it would shrink itself to maintain an internal temperature of 75°. They also found that the green slime has specialized pumps to pump out water if it gets too wet. As of yet, none of the green slime samples have reproduced, but they do appear to be growing very slowly. When looking at the green slime under the microscope, scientists can see smaller structures filled with green slime and tiny pumps. What are some reasons the green slime may be considered a living organism? What are some reasons the green slime may not be considered a living organism? Do you think the green slime is alive? Why or why not? *
Answers
Answer: The following assumptions can be made for the green slime.
Explanation:
1. The green slime has many characteristics, which indicates that these are adaptations which were used by the slime to survive. It uses pump to expel out excess water, and in freezing it can shrink itself to maintain its temperature. Thus these characteristics indicates that the green slime is living.
2. The green slime did not reproduced. This indicates that the slime was not living.
3. The slime was living because it had characteristics which enable it to survive like other living organisms.
Investigator Benton uses several methods to analyze hair samples found at the crime scene. He examines the physical features of the hairs, their color and shape, as well as the medulla of the hairs. Using the hair root, he tests for nuclear DNA and also for mitochondrial DNA. Which of these tests would most likely indicate the owner's identity?
Morphology
Medulla
Nuclear DNA
Mitochondrial DNA
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Answer: Nuclear DNA
Explanation:
Got it right.
In order to maintain homeostasis, it is MOST important for an animal to be able to?
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Answer:
Homeostasis is the way animals maintain a stable internal balance in their body. It allows animals to function in the changing external conditions surrounding their body. Homeostasis is important to Chinook salmon because they depend on the functioning of its cells to help its survival and ability to reproduce.
Explanation:
In order to maintain homeostasis, the animal should be able to respond to environmental conditions.
What is homeostasis?The word homeostasis can be defined as the presence of a state of equilibrium in a given biological system.
Homeostasis is fundamental for surviving in challenging environmental conditions.In conclusion, in order to maintain homeostasis, the animal should be able to respond to environmental conditions.
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A certain chocolate bar contains 6 mg of caffeine in a 1.5 oz. Serving. The king-size version of the chocolate bar is 85 grams. How much caffeine, in mg, would you consume if you eat the entire king-size bar?Fill in the answer in the blank provided. Mg of caffeine
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Answer:
The amount of caffeine that would be consumed if one eats the entire king-size bar will be 11.99 mg
Explanation:
This question can be reframed in the manner below for better understanding.
If 1.5 oz or ounce of a chocolate bar contains 6 mg of caffeine, how many milligrams (mg) of caffeine is contained in 85 grams of the same chocolate bar.
Firstly, the ounce should be converted to grams
If 1 ounce = 28.35g
1.5 ounce = ?
= 1.5 × 28.35/1
=42.53g
Hence, 42.53g of the chocolate bar contains 6 mg of caffeine
85g of the chocolate will contain
42.53g = 6mg
85g = X
where X is the amount of caffeine that will be consumed in mg
X = 85 × 6/42.53
X = 11.99 mg
The amount of caffeine that would be consumed if one eats the entire king-size bar will be 11.99 mg
Which human activity has the most negative effect on the stability of an ocean environment
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Answer:
putting motor oil or leakage of oil in oil carrying ships
A student claims that a leaf is living, and a plastic leaf is nonliving. Which statement provides evidence to support the claim?
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Answer:
The plastic leaf lacks cellular structure.
Explanation:
Many viruses intect only a certain type of cell because they bind to certain
A- receptor sites on the surface of the cell
B- hormones in the cell
C-other viruses on the surface of the cell
D- mitochondria in the cell
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hope this helps :)
Which best describes a neutralization reaction? areaction between an acid and a base Oareaction between two acids O a reaction between a base and a salt Oa reaction between two salts
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The statement best describes a neutralization reaction is a reaction between an acid and a base. The correct option is a.
What is neutralization?Neutralization is the reaction that occurs when acids and bases of equal strength react to generate salt and water. Because acid and bases cancel each other out, the salt generated in the reaction is neutral.
Neutralization is the reaction of an acid and a base that causes the pH to rise to 7. It is a useful process that occurs in everyday life, such as the treatment of acid indigestion and the addition of lime to acidic soil. Neutralization lowers the pH of alkali to around seven.
Taking a base helps to neutralize excess acid in our stomach. Because formic acid is present in the ant sting, it can be painful. Using moist baking soda, which is basic in nature, we can neutralize the acid action and reduce the discomfort caused by the sting.
Therefore, the correct option is a, action between an acid and a base.
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Answer:
the correct option is A, action between an acid and a base.Explanation:
A researcher finds that males in two populations of bowerbirds make different types of structures to attract female birds. The males of population 1 build hut-shaped structures and decorate them with colorful objects. The males of population 2 loosely interweave sticks around a central pole and decorate it with dull-colored objects. Female bowerbirds prefer structures made by males of their own population.
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Answer:
.....
Explanation:
....
What best explains how you can smell burned toast from another room?
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Find the number of atoms of each element.
Ca(OH2)3
Ca:
0:
H:
please!!!
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Explanation:
Calcium Hydroxide has three atoms 5 atoms in each molecule.
One calcium atom
Two oxygen atoms
Two hydrogen atoms
So total 5NA. present in NA molecules.......
How does the destruction of tropical rainforests relate to the greenhouse effect
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I WILL GIVE BRAINLIEST PLS HELP
Which type of RNA is shown in orange, carrying an amino acid?
A. Messenger RNA
B. Transfer RNA
C. Ribosomal RNA
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Answer: B. Transfer RNA
Explanation:
List three types of asexual reproductions (other than vegetative) and define each in a short paragraph.
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Answer:
Budding, spore formation, binary fission
Explanation: