BIOLOGY HIGH SCHOOL

List and describe two ways that scientists can date fossils found in the earth.

Answers

Answer 1
Answer:

Answer:

relative and absolute dating

Explanation:

Two methods of dating fossil fuels are -

a) Relative Dating  and b) Absolute Dating

a) Relative Dating - In this method,  unknown age of fossil A is determined by comparing it with the known age of fossil B via correlation . Such " fossils B" are known as index fossils. These index fossils belong to a specific age group.

Some common example of index fossils are -

brachiopods,

trilobites, and

ammonites

b) Absolute Dating - In this method, the age of rock is determined through radiometric dating methods. Here, instead of dating the fossil itself, the rock or volcano layer above and below the fossil is dated for determining a rage of date.

Answer 2
Answer: First, they can describe how old fossil is by just looking at the layer where the fossil remain, the deeper the fossil, the longer the time way back that organism has live.

Second, Radiometric Measuring, is how they calculate how the fossil has been decays over time.
 Hope this help.

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What does blood deliver to every part of the body?

Answers

Blood can be defined as a tissue that is made up of white blood cells, platelets, plasma, red blood cells and other components. About 1-1½ gallons (4 to 6 liters) of blood is circulated in the body and the heart pumps the whole volume of blood every minutes.

Thus, blood is known to deliver oxygen and nutrients to the rest of the body while waste products and carbon dioxide produced were removes from the body. During metabolism, oxygen is transported in the blood from the lungs to the cells of the body while carbon dioxide during these processes is transported back to the lungs by the blood.

However, blood also play other important functions in the body by regulating acid-base (pH), electrolytes and temperature.
I believe the answer is: Hemoglobin which carries oxygen

Oxygen becomes the main source of energy for our body to operate its daily function. The blood would bind the oxygen that taken in from the longs and distributed them to various parts of our body as it circulates from the pump of our heart.

If this data was placed in a bar graph, which statement would describe the graph

Answers

After analyzing the data provided above in which show the amount of carbohydrates in similar servings of different fruits we arrive at the conclusion that bananas have the most calories per serving. Therefore give more energy than all the other fruits.



I hope it helps, Regards. 

Answer: Bananas

It has the most carbohydrates per gram at 34 based on the chart

A random-digit dialed survey conducted in the city of long beach, california reported that a greater proportion of nonsmokers endorsed a ban on smoking in alcohol-serving establishments than did smokers. What type of study design was this?

Answers

Answer:

The correct answer is case-control study.

Explanation:

In a case-control study, two groups of the population are used, in which one group is kept as control, and the other is known as the experimental group that encounters with a specific disease or an outcome. With the help of this study, one can expose the groups to various or single outcomes.  

In the given case, a study is done in which an advertisement on a ban on smoking is encouraged by the non-smokers at the alcohol sale points but not by smokers, in the process a random digit dialing method was used. This random digit dialing method is an illustration of a case-control study, in which the survey of the individuals is done regarding the ban on smoking.  

Does the PLANT CELL have RIBOSOMES?
A. Yes
B. No

Answers

A. Yes. Is correct.Hope that helps
yes the plant cell have ribosomes

in general, a species' _____ niche will be smaller than its _____ niche due to interactions with other organisms in the community.

Answers

In general, a species' realized niche will be smaller than its fundamental niche due to interactions with other organisms in the community.
Hope that helped you.

Consider this reaction:N2 (g) + 3H2 (g) 2NH3 (g)
What will happen if more hydrogen gas is added to the reaction mixture?
There will be a shift toward the products.
There will be a shift toward the reactants.
There will not be a shift in equilibrium.
The value for Keq will change.

Answers

The answer is There will be a shift toward the reactants.

To solve this problem, it is necessary to understand Le Chatelier's principle. According to the principle, if a chemical reaction undergoes changes in conditions, the chemical equilibrium will shift in order to undo the effects. In the reaction N2 (g) + 3H2 (g) ⇄ 2NH3 (g), when hydrogen gas is added to the reaction mixture, the concentration of chemicals will increase in the mixture. The system will try to decrease the concentration by removing H2, so the equilibrium will be shifted toward the reactants.

Final answer:

If more hydrogen is added, the equilibrium of the reaction will shift towards the products, leading to more production of ammonia to counterbalance the increase in hydrogen. The value for Keq will not change unless the temperature changes.

Explanation:

The reaction in question involves the reactants nitrogen (N2) and hydrogen (H2) combining to form ammonia (NH3). This is a chemical equilibrium process. In chemistry, Le Chatelier's principle states that if you disturb a system at equilibrium, the system will adjust itself to reduce that disturbance.

Therefore, if more hydrogen (one of the reactants) is added, the system will try to reduce it by using more H2 in the reaction to produce more ammonia (NH3)—the product. This shift in equilibrium is an attempt to counteract the increase in concentration of hydrogen. Hence, the equilibrium will shift towards the products. Moreover, the equilibrium constant (Keq) will not change unless the temperature of the system changes, as it is only dependent on temperature not on concentrations of reactants or products.

Learn more about Chemical Equilibrium here:

brainly.com/question/32227445

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