mineral
hardness
way it breaks
luster
streak
color
Galena
2.5
cleavage
metallic
gray-black
silver, gray
Magnetite
6
fracture
metallic
black
black
Hematite
6
fracture
metallic-dull
red-brown
red-brown, silver, black
Susan wants to identify a dark, heavy mineral sample she found in the classroom collection. She
notices there are three minerals in a chart in a reference book that might match her sample. Susan
next observes that her sample mineral has flat, reflective surfaces that break into boxlike steps. She
infers the mineral may be galena. If she is correct, one more test will verify her inference. Which
property would to best for her to observe next?
hardness
O luster
O streak
O color

Answer:

True

Explanation:

But because the Earth rotates, circulating air is deflected. Instead of circulating in a straight pattern, the air deflects toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere, resulting in curved paths. This deflection is called the Coriolis effect.

Answer:

true

Explanation:

Answer:

A. The mutations of species can affect the animal by a large amount. Especially if the animal is prey for other animals.

Answer:

Explanation:

physical changes are things that you can see, like actual changes. Chemical changes are things that you cant see like gas evaporating.

Plants can be genetically engineered through the use of biotechnology to be less susceptible to insects. This trait will make pesticide use less necessary.

This is the sample answer on edge.

This method combines the genetic productivity enhancement of plants with the management of their hazardous organisms.

Typically, agricultural biotechnology is utilized to boost plant production productivity to reduce the use of pesticides.

In agriculture by applying biotechnology, pest management and the use of pesticides will be reduced for modified plants.

The emergence of insect-resistant plants will be accelerated by technological advancements, and with an improved grasp of biotechnological processes, the acceptance of biotechnology goods might grow.

Therefore to reduce paste management and make crop resisitance for paste biotechnology is used.

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Answer:

Explanation:

The rate limiting reaction of aerobic respiration involves the phosphorylation of fructose phosphate by the enzyme phosphofructokinase. The rate at which this enzyme makes product is [increased, decreased] when ATP levels rise because the molecule ATP binds to an allosteric site on the enzyme and acts as a direct inhibitor. When ATP levels fall AMP binds to the allosteric site of phosphofructokinase. This interaction leads to an increase of cellular ATP, so that this is an example of a negative feedback loop.

An aerobic respiration can be defined as a chemical and biological process that involves the use of oxygen in living organisms to make energy (ATP) from carbohydrates (sugars) during cellular respiration.

This ultimately implies that, an aerobic respiration can take place or occur in the presence of oxygen.

An enzyme can be defined as a biological catalyst that typically speeds up (accelerates) the rate of a chemical reaction, especially by lowering the activation energy of its chemical reactants.

There are four (4) main factors that affect the actions and the rate of an enzyme and these include the following:

Read more on here:

Answer:

In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products. Endothermic reactions are accompanied by a decrease in temperature of the reaction mixture.

Answer: water is removed during dialysis therefore the excess water decreased his mass.

Explanation:

Answer:

water is removed during dialysis therefore the excess water decreased his mass.

Explanation:

Answer:

yes, our outer space has a moon

Answers are below:

8. aa

9. GG, Gg

10.pp

11. SS, Ss

12. rr

13. ii

14. tt

15. Aa, AA

16. PP, Pp

17. RR, Rr

18. gg

Eras and periods both appear at the start of the Cambrian period.

In geological time scale, period is the fundamental unit.

Few periods combine to form an Era.

Few Eras combine to form an Eon.

Time period before the Cambrian period (which is the first period in Paleozoic era) is generally termed as 'Precambrian' time. Classification of time scale as periods and eras began at the start of Cambrian period.

Answer:

The answer is C.

Explanation:

Eras and periods both appear at the start of the Cambrian period.

Answer:

1 is C

2 is A

3 is B

Explanation:

1 - the cow is breathing and releases carbon dioxide the tree absorbs it and releases oxygen

2 - the cow Is breathing that's why it releases carbon dioxide

3 - the human takes in oxygen but breaths out carbon dioxide

Answer:

ozone

Explanation:

All living organisms on the earth are protected from the harmful radiation coming from the sun by the ozone gas present in the stratosphere. Ozone gas is formed by the action of sunlight only oxygen of the air in the atmosphere.

Answer:

ozone gas

Explanation:

Answer:

d. Pluripotency markers  

Explanation:

Pluripotency can be defined as the capacity of individual cells to differentiate into any cell type. Pluripotent transcription factors are pluripotent proteins that promote the differentiation of embryonic stem cells (ESCs) into stem/progenitor cells by inducing the expression of target genes, which are also capable of maintaining their pluripotent state. For example, SOX2, OCT4 and NANOG are pluripotent transcription factors highly expressed in ESCs in order to maintain the pluripotent state of these cells.

Answer:

D

Explanation:

Cows eat grass

Because Earth has limited materials and room for deceased creatures, biogeochemical cycles are vital to life and ecosystems. Biogeochemical cycles transport and store these chemicals for living creatures.

Because there is a finite quantity of stuff on earth and a certain amount of room for dead species as well, biogeochemical cycles are crucial for life and significant to ecosystems. Additionally, biogeochemical cycles are crucial because they move and store these chemicals so that living things may use them.

The flow of nutrients and other elements between biotic and abiotic forces is referred to as "biogeochemical cycles" in most cases. The words "bio" and "geo," which refer to the biosphere, "geo" and "chemical," which refer to the elements that flow through a cycle, are the roots of the phrase "biogeochemical."

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Answer:

Many cell cycle control factors, mainly cyclins, cyclin-dependent kinases (Cdks) and cyclin-dependent kinase inhibitors (CKIs). Cyclins and Cdks activate cell cycle factors that are essential for the start of the next cell cycle phase.

Explanation:

Hope this helps

Answer:

A. The population will be 3,845 after a year. The bison will not pose a problem until the following year, and no conservation action will need to take place.

Explanation:

The exposed example refers to a population that exhibits a logistic growth model, Where the principal limiting factor is food availability

When N < K the population has not reached the maximum size that can be supported by the environment. It can increase in size.

When N = K the population has reached the maximum size that can be supported by the environment. It can not grow anymore. The population reached a maximum point delimited by available resources, such as food

When N > K the population has supered the maximum size that can be supported by the environment. It must decrease in size. because there are not enough resources.

To calculate the population size after one year, we need to use the following equation.

N t+1= Nt+rN(1-N/K)

Available data:

K = 4500

N = 3652

r = 0.28  

Nm= 4000

N/K = 3652/4500 = 0.8115

r.N = 0.28 x 3652 = 1022.56

N t+1= Nt+rN(1-N/K)

N t+1= 3652+1022.56(1-0.8115)

N t+1= 3652+1022.56(0.1885)

N t+1= 3652+192.753

N t+1= 3844.75  

rounding up to 3845

Answer:

Viewed simply, electrons are arranged in shells around an atom's nucleus. Electrons closest to the nucleus will have the lowest energy. Electrons further away from the nucleus will have higher energy. ... In a more realistic model, electrons move in atomic orbitals, or subshells.

Explanation:

A decrease of the biodiversity of an ecosystem is one of the prime cause for a reduction in ecosystem productivty.

Productivity in ecology signifies towards the rate of generation of biomass in an ecosystem. Generally it is articulated in units of mass per volume per unit time. A decrease in biodiversity is one of the major cause of a decrease in ecosystem productivity.

The loss of biodiversity generally takes place by five prime factors:

A reduction in biodiversity results in a decrease in the stability of the ecosystem. As a change to one organism will exhibit a greater influence on the entire ecosystem.

Thus, the correct answer is option b.

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Answer: B

Explanation: edge 2020

Answer:

Without ADH the kidneys will not save as much water and you produce large volumes of dilute urine. The level of water in your blood falls back to the typical level.

Explanation:

As the level of water in the blood falls, negative feedback makes sure that the amount of ADH will rise.

Poison Ivy. They are plants and can make their own food aka Glucose.

Answer:

sampling (d)

Answer:

D) sampling

Explanation:

A sample, in the context of scientific research and statistics, is a representative subset of a population

Answer:

C

Explanation:

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Mediterranean climate has cool and rainy winters. Therefore, option C is correct.

Mediterranean climate, a major Köppen climatic type with hot, dry summers and cool, wet winters, is found on the western sides of the continents between 30° and 45° latitude north and south of the equator. Seasonal changes occur because of changes in ocean currents.

Strong wind systems, severe precipitation, Mediterranean cyclones, and a significant seasonal difference in temperature and rainfall are some of the distinctive regional characteristics of the Mediterranean climate. This climate has only two seasons and that is summer and winter. Winters are shorter than summer.

Thus, the Mediterranean climate has cool and rainy winters. Therefore, option C is correct.

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Answer: Energy is released when bonds in the food molecules are broken during digestion.

Explanation:

The following are made of carbohydrates are ;

Carbohydrates are the biomolecules that act as the primary sources of energy. When the body requires instant energy the biomolecule that is first consumed is a carbohydrate.

Vegetables are a rich source of carbohydrates for example potatoes, sweet potatoes, corn and Beetroots.

Vegetables are the major source of carbohydrates.

Thus, this could be the answer.

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Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released by people burning fossil fuels.

hope this helps ^^