The rungs or steps of the ladder would be the

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Answer 1
Answer:

The bases.

Hope this helps!

-Payshence


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Describe how fossils help us understand the past
In corn, a dihybrid for the recessives a and b istestcrossed. The distribution of the phenotypes is as fol-lows:A B 122A b 118a B 81a b 79Test the hypothesis that these genes are assorting inde-pendently using a chi-square test. Explain tentatively anydeviation from expected values, and tell how you wouldtest your explanation.
A volcano that is fairly symmetrical and has both layers of lava and pyroclastic deposits is a _____.cinder cone volcano pyroclastic volcano composite cone volcano shield volcano
In 2000, Bob Harmon discovered the best-preserved Tyrannosaurus Rex skeleton ever found. The fossilized dinosaur was sticking out of the wall of a canyon in Montana. Many scientists were eager to study the fossils. Dr. Mary Schweitzer got one of the leg bones to analyze. Dr. Schweitzer's assistant dissolved the bones in acid and discovered that some soft tissue had survived even after 68 million years. The discovery was a shock to the scientific community. No one had ever found such old tissues. Dr. Schweitzer found structures identical to modern red blood cells and blood vessels inside the bone.Which organ system do blood cells and blood vessels belong to?A.circulatory systemB.nervous systemC.skeletal systemD.respiratory system

Which characteristic do cyclones and anticyclones have in common?

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Cyclones and anticyclones are both air pressures caused by the Earth’s rotation.  They are rotating winds responsible for the weather conditions we experienced in a short or long period of time on a scale of days or weeks. 

Their one most common characteristic is their wind movement. They are both winds moving in a circular motion

Though we don’t often hear about anticyclones; however, it is the exact opposite of cyclones or ‘storms’.  

Their one most common characteristic is that they are both winds moving in a circular motion. They are rotating winds responsible for the weather conditions we experienced in a short or long period of time on a scale of days or weeks. 


Describe a similarity and a difference between meiosis I and meiosis II

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Answer:

During meiosis 1, the parent cell with double the normal amount of chromosomes, splits into two diploid cells (have enough chromosomes to survive). During meiosis 2, the two diploid cells each split into two haploid cells (have half the amount of chromosomes to survive). Meiosis ends with four haploid cells.

Both Meiosis 1 and 2 have the same phases: Prophase, Metaphase, Anaphase and Telophase. One difference is that Meiosis 1 starts with a diploid cell and Meiosis 2 starts with 2 haploid cells, each with a homologous pair. ... Since there are no homologous pairs (only chromatids), recombination can not occur

Explanation:

Which statement best. describes the fossil record?it is a complete record
it is an incomplete record
most fossils are older than 5. billion years
all fossils are younger than 600 years

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Answer:

It is incomplete record

Explanation:

I took the quiz and got it right.

What characterizes a cold glacier?

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Answer:  Cold glaciers are found in the regions  with higher latitudes and experience less seasonal variation in temperature than those of  the lower altitudes.

They also move due to the internal flow rather than the basal slippage. They get freezed to the bedrock and they do not experience the same melting.

They move due to the action of gravity and the pressure exertion by the accumulation of ice.

They move at the speed of 2 cm a day.

On the slopes of a mountain, the snowflake lands on a glacier. ... In extremely coldregions, a glacier's ice is often frozen to bedrock, which hampers its flow.

True or false. Heterotrophs obtain energy through the process called respiration.

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This statement is true. For example animals are heterotrophs and they obtain energy through cellular respiration.hope it helped you .Please mark as the brainliest answer if it helped.

2. How does the structure of an enzyme affect its function?

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Explanation:

Enzymes. Most enzymes are proteins and therefore their function is specific to their structure. ... The enzyme binds with the appropriate substrate only in the correct alignment and orientation to connect the molecules. The resulting enzyme-substrate complex enables the reaction to occur.