In the 1980s, Stephen Jay Gould identified two types of extinctions that each had different evolutionary consequences. What are these extinctions called?

Answers

Answer 1

Answer:

Mass extinctions and background extinctions

Explanation:


Related Questions

Hello, if you cod answer this it would be very much appreciated.

Answers

Answer:

I know that it cant be A,B,C. D is close but it seams that it also slightly getting dryer, so i think that I would go with OTHER.

Other: It fluctuates between wet and dry

Where does the water that a land plant uses for photosynthesis come from? The water comes from _____.


-Evaporation
-Condensation
-Precipitation

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Answer:

precipitation

Explanation:

which of the following statements about the cells of any multicelluar organisms is true

Answers

Answer The DNA in a cell is all the same

Explanation:

True or False: Chromosomes can be seen with the naked eye.


Answers

the answer is false Because it is so thin, DNA cannot be seen by the naked eye unless its strands are released from the nuclei of the cells and allowed to clump together.

Why is it possible to do the following party tricks without cheating?
A. Stand with back and heels touching a wall and bend forward from the hips to touch the floor. Return to the upright position without flling or moving the root.
B. Stand facing the edge of an open door with nose and abdomen touching the edge, the feetstraddling the door, and the hands to the sides. Attempt to rise up on the toes.Observe what body motions occur to keep the center of gravity within the base of support whenthese activities are performed without the impediments.

Answers

Answer:

When the body is supported by a wall then it can move in a position counter gravity. The gravity tries to pull the body down and the body responds to it with a slight delay because of wall support.

Explanation:

The body is lifted in upright position with the help of feet. The body rises but after few minutes the gravitational force creates pressure on the body and the body comes down to a natural state. Similarly if the open door is used to perform counter gravity activities then the body will stay for a lesser period in a state because of opened door instead of firm wall support.

about minority intelligence levels may create feelings of vulnerability, which then undermine IQ

performance.

A. Stereotypes

B. Cultural bias

C. Socioeconomic issues

D. Inherited traits



It’s A

Answers

Answer: Stereotype

Explanation:

Stereotype is simply the expectation, belief or assumption witth regards to a certain group of people.

We should note that the stereotype about minority intelligence levels may bring about feelings of vulnerability, which then undermine the performance of ones intelligent qoutient.

Answer: A

Explanation:

You are a glucose molecule in a disaccharide found in a drink that was sipped by an athlete who is about to begin running a 1600m (1 mile) race. Put the words in the list below in the appropriate order to describe the process of your journey from the mouth and ultimately to the muscle cells for energy.
a. electron transport system
b. active transport

c. stomach

d. pyruvate
e. brush border disaccharidases
f. carbon dioxide and water
g. mouth

h. citric acid cycle
i. glucose transporters
j. duodenum
k. glycolysis

l. jejunum
m. blood
n. esophagus

Answers

Answer:

Mouth -Esophagus-- Stomach -Duodenum -Jejunum -Brush border disaccharidases--Glucose transporters--Active transport--Blood-Glycolysis-Pyruvate--Citric acid cycle - Carbon dioxide and water  : )

Explanation:

The journey of a glucose molecule from the mouth and ultimately to the muscle cells for energy in the correct order is:

Mouth  > Esophagus  > Stomach > Duodenum  > Jejunum  > Brush Border Disaccharidases  > Blood  > Glucose Transporters > Glycolysis  > Pyruvate  > Citric Acid Cycle  > CO2 and Water  > Active Transport  > Electron Transport System.

The drink rich with disaccharides starts its journey from the mouth cavity and moves through the esophagus to the stomach. The disaccharide digestion takes place when it reaches the jejunum through the duodenum of the small intestine by enzyme maltase that also presents in Brush Border Disaccharidases to glucose.

Glucose moves o blood and through a glucose transporter for cellular respiration that starts with glycolysis that converts glucose to pyruvate and enters in TCA cycle and releases CO2 and water as byproducts that ultimately moves to the ETS system to provide energy to the muscles.

Thus, the correct answer is - given above in the correct order.

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If I put down an apple next to a banana will it ripen faster?

Answers

Answer:

no

Explanation:

1. word that means produced by a living thing

2. a word that means NOT produced by a living thing

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Inanimate means not produced by living things and Organism means to be produced by living things

when you move your hand up and down while holding on a jump rope, you make a wave. What is the medium

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Answer:

The medium of the wave is the Rope.

Explanation:

This is because it is transverse wave and transverse wave need a medium to transfer energy and this is because in transverse wave,particles of the medium move in a direction that is perpendicular to the direction of the transverse wave. From the question, when you move you hand up and down, you make a wave and the direction of the wave is also up and down which is perpendicular to the direction of the wave.

What are the waste product of alcoholic fermentation

Answers

Answer:

Ethanol fermentation causes bread dough to rise. Yeast organisms consume sugars in the dough and produce ethanol and carbon dioxide as waste products. The carbon dioxide forms bubbles in the dough, expanding it to a foam.

Answer:

Ethanol and carbon dioxide

Explanation:

If a plant is considered “drought-resistant“ does it require more or less water to perform photosynthesis?

Answers

Answer:

Less water.

Explanation:

If the plant is "drought-resistant" then that should mean less water is required for the plant to perform photosynthesis.

HELP PLEASE DO THE WHOLE PAGE

Answers

Answer:

'krf'klmf

Explanation:

lkn4f4klng

Girl no that’s to much

Which of the following is not true concerning the flow of energy through an ecosystem ​

Answers

Answer:

D. Most of the energy from photosynthesis flows out as heat

Explanation:

Energy flow is the amount of energy that moves through a food chain in a given ecosystem

Question 1 of 10
Match the layer with its characteristic.
Mantle
?
Ranges from 6 km to 70
km thick
Moho Barrier
?
?
Convection here leads to
earthquakes
Core
2
Has a liquid and solid layer
Crust
?
Separates the crust and
mantle

Answers

Answer:

Crust- ranged from 6km to70km thick .

mantle- convection here leads to earthquakes.

Core -has a liquid and soild layer

Moho barrier- separates the crust and mantle.

Explanation:

HOPE this helps

The layers of the earth are differentiated based on their composition and occurrence. The crust is 6 -70 km thick, and the mantle is where the convection occurs. Thus, the matches are 1. c, 2. d, 3. b, and 4. a.

What are the layers of the earth?

Earth has many different layers based on their arrangements and occurrences. The crust is the first layer of the earth where humans and other organisms live and ranges from 6 -70 km thick. It is followed by the Moho barrier.

The Moho barrier is the layer that separates the crust from the mantle and is followed by the mantle layer where the convection in the tectonic plates leads to earthquakes.

The deepest and the innermost layer is the core where the solid and liquid hot gases are found at very high temperatures. It is very hot and composed of iron and nickel.

Therefore, the matches are 1. c, 2. d, 3. b, and 4. a.

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Please read the following scenario to answer the following question. While working with cultured mouse cells, a researcher unknowingly treated the cells with a mutagen that causes the deletion or insertion of individual nucleotides in DNA. Subsequently, the researcher isolated and cultured a single cell from this group and noticed that the progeny of this cell were not producing a certain protein, and that this affected their survival. The mutation would be most harmful to the cells if it resulted in ________

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Answer:

deletion or insertion of nucleotide from or in any coding sequence of the DNA

Explanation:

The mutation would be most harmful to the cells if it resulted in the deletion or insertion of nucleotide from or in any coding sequence of the DNA.

Deletion or insertion of a nucleotide from/into the coding sequence of DNA results in a frameshift mutation away from the original protein. Deletion/insertion of a nucleotide from/to the coding sequence of a DNA can cause a totally different protein to be synthesized from such DNA or, worse still, results in a nonfunctional protein. Both results could be grossly harmful to the cells.  

i would appreciate it a lot if you answered this:

Answers

Answer:

the nucleus

Explanation:

Chromatin is a mass of genetic material composed of DNA and proteins that condense to form chromosomes during eukaryotic cell division. Chromatin is located in the nucleus of our cells. The primary function of chromatin is to compress the DNA into a compact unit that will be less voluminous and can fit within the nucleus.

Which of the following statements is true?
OA. Chemical reactions can either absorb thermal energy or release thermal energy
ОВ.
Chemical reactions can only absorb thermal energy.
OC.
Chemical reactions can neither absorb thermal energy nor release thermal energy.
OD.
Chemical reactions can only release thermal energy.

Answers

I think the answer is A! i might be wrong

Answer: Chemical reactions can either absorb thermal energy or release thermal energy.

A major movement in the forest industry is _____.


A. Paper reduction

B. Slash and burn

C. Recycling

D. Reforestation

Answers

Answer:

D. Reforestation

Explanation:

Reforestation is a natural or intentional way of restoring existing forests and woodlands by restocking it after they have been depleted through deforestation. Forest industry makes use of forest product for production this includes log, paper and pulp production. Ability to restock after felling of this tree for product making helps continuation.

Reforestation helps to rectify the effects of deforestation and this helps to improve our health in turn by absorbing pollution and dust from the air.

Which of these human behaviors has the least potential to harm the
environment?
A. Focus on harvesting of high-value resources
B. Unregulated rates of harvesting resources
C. Use of technology to speed harvesting of resources
D. Focus on steady harvesting of abundant resources
ID

Answers

Answer:

D. Focus on steady harvesting of abundant resources

I think it’s d. Because resources are very important in an environment

How might a sudden cold front limit population growth of newborn offspring?"" HELP PLEASE

Answers

Answer:

The correct answer is - they may not be able to survive at such a temperature.

Explanation:

A Cold front is a weather change when a cooler air mass moves into warmer air that leads to a sudden drop in temperature following by the cyclone, heavy rainfall and hail.

These sudden changes and heavy rain with storms and cyclones can limit the population growth of newborn offspring as they may not able to survive in such a sudden temperature drop.

What kinds of characters can you use to create a data matrix for estimating phylogenetic trees?
a. any heritable trait.
b. any morphological trait.
c. any molecular trait.
d. any measurable trait.

Answers

Answer: The correct option is A

any heritable trait

Explanation:

This is because phylogenetic tree is a diagram that show or indicate the evolutionary relationships between several organisms from a descent or that have common anscetors which is based on the differences or similarities of there phenotypic traits or physically expressed inheritable traits.

What do we still need to know in order to determine why the two rock formations have such similar minerals?

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Answer and Explanation:

Rock is defined as the collection of one or more minerals. Granite, sedimentary rock, igneous rock, metamorphic rock and limestone are the types of rock. Granite is the most common type of rock. Granite is made up of four minerals such as hornblende, feldspar, quartz and mica. Granite breaks down to form sedimentary rocks. Igneous rock begins as magma. The lava and magma harden to form igneous rock. Metamorphic rocks are made from pressure.  Rocks are made of one or more minerals, which are cooled and melted together, cemented together, or heated and squeezed together. The mineral occurs naturally and is made of crystals. The earth’s crust is made of rocks. Most rocks are covered by soil. Soil contains the small pieces of rocks.  The two rocks have similar composition but different texture. Rocks are formed in different ways. The rocks can be changed from one form to another.

Transcribe the following DNA strand. Then translate the tRNA strand you wrote.

Answers

Answer:

Transcription into mRNA strand will produce: ACU CAG CUG ACC GAC UGG CAU CUG

Translation into amino acid sequence will yield: Threonine- Glutamine- Leucine- Threonine- Aspartic acid- Tryptophan- Histidine- Leucine

Explanation:

- Transcription is the process by which DNA template is used to synthesize a mRNA molecule in the nucleus (eukaryotes). The transcription, which is carried out by an enzyme called RNA polymerase, follows the complementary base pairing rule i.e. A-T, G-C. Note that Uracil replaces Thymine in the RNA molecule.

Based on this question in which a DNA strand was given as follows: TGA GTC GAC TGG CTG ACC GTA GAC

The mRNA strand that will result from transcribing this DNA will be: ACU CAG CUG ACC GAC UGG CAU CUG

- Translation is the process by which mRNA strand is used to synthesize amino acid sequence (protein) in the ribosomes. In the mRNA sequence, nucleotides are read in a group of three called CODONS. Each codon specifies an amino acid. Based on the mRNA sequence as follows: ACU CAG CUG ACC GAC UGG CAU CUG, the amino acid sequence that will result after using the genetic code will be: Threonine (Thr)- Glutamine (Gln)- Leucine (Leu)- Threonine (Thr)- Aspartic acid (Asp)- Tryptophan (Try)- Histidine (His)- Leucine (Leu).

True or False: Magnetism is a force that can't be seen; however, the effects of magnetism can be made visible.​

Answers

Answer: True

Explanation:

the answer is faldo

hope it helps

Scientists are studying a layer of sedimentary rock and discover what appears to be ripples made by runding water preserved in the rock. When comparing those ripples to some made in mud at a present day location, they notice that the effects are identical. Based on the observations, which of the following is most likely to be true? OA. OB. The mud at the present day location is actually from the same time period as the rock The environment and conditions of both areas are exactly the same. OC. Some events that occurred in the past are similar or identical to events in the present. OD. Events that occurred in the past were dramatically different from those of today.

Answers

There are certain past occurrences that are comparable to or exact replicas of current happenings.

What can be learned about dinosaurs and other extinct creatures from the strata found in sedimentary rock?

They keep a record of the old flora, fauna, and climates. The fossils contained therein are frequently used by scientists to determine the correct order of sedimentary rock layers.

What does the depositional environment normally reveal about symmetrical ripples like those shown in the sandstone below?

Ripples display "tuning-fork" branches and are symmetrical. This suggests to a geologist that wave action was present during the sandstones' deposition (nearshore).

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. Which statement best describes arteries? A. They have thick walls and transport blood away from the heart. B. They have thick walls and transport blood toward the heart. C. They have thin walls and transport blood away from the heart. D. They have thin walls and transport blood toward the heart.​

Answers

Answer:answer is 1

Explanation:

because i’m like that and i know

What gametes are produced by the following organisms:_______.
a. Genotype YyRr, if Y and R are on different chromosomes
b. Genotype YyRr, if dominant Y and R are on the same chromosome, no crossing over
c. Genotype YyRr, if dominant Y and recessive r are on the same chromosome, no crossing over
d. Genotype YyRr, if dominant Y and R are on the same chromosome, 50% crossing over

Answers

Answer:

The correct answer would be -

1- YR, Yr, yR and yr.

2. Yr, yR

3. YR, yr

4. YR, Yr, yR & yr

Explanation:

A mature male or female haploid germ cell that fuses with another gamete of the opposite sex during the process of fertilization to make a zygote in sexual reproduction.

The law of Independent Assortment presented by Mendel says that alleles for different traits are passed and assort independently of one another in the gametes.

1. If Y and R on different chromosomes then they will produce four gametes and assort independently - YR, Yr, yR & yr.

2) If Y and R on the same chromosomes and no crossing over occurs then they will produce only two gametes as Y and R will not come together - Yr & yR.

3).  if dominant Y and recessive r are on the same chromosome, no crossing over then only two gametes will form as Y and r will not assort together - YR & yr.

4). if dominant Y and R are on the same chromosome, 50% crossing over produces 4 types of gametes, YR, Yr, yR & yr.

Example on one of the 3 laws of motion

Answers

Answer:

Newton's First Law of Motion

Explanation:

A body at rest persists in its state of rest, and the body in motion remains in uniform motion along a straight line unless acted upon by a net external force.

What causes the earths tides; describe the conditions for the largest tides?

Answers

Answer:

Earth's rotation and the gravitational pull of the sun and moon create tides on our planet. Because the sun is so much larger than the moon (27 million times more masssive), it has a much bigger graviational pull on Earth.

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