Carol and Sam were using the microscope in science class. They used a dropper to put some pond water on their microscope slide. This is what they saw. "That is something living," said Sam. "I don't think so," said Carol. What do you think? Explain.
options:

This is not alive. It is not moving or responding.


This sample is made of identical units. It is not alive.


This is a multicellular organism made of cells. It is living.


This may have been alive once, but not now because it is not moving.

Rocks from the Ordovician Period contain evidence that plants began colonizing dry land at this time. Most experts agree that the ancestors of land plants first evolved in a marine environment, then moved into a freshwater environment and finally onto land.

Ordovician Period, in geologic time, the second period of the Paleozoic Era. It began 485.4 million years ago, following the Cambrian Period, and ended 443.8 million years ago, when the Silurian Period began. Ordovician rocks have the distinction of occurring at the highest elevation on Earth—the top of Mount Everest.

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Answer:

9:3:3:1

Explanation:

In this inheritance pattern, the ratio that best represents the phenotype of the F2 generation is 9:3:3:1. Thus, the correct option for this question is A.

A phenotype may be defined as the mechanism of expressing genotypes in the form of traits. In more simple words, it is also characterized as the morphology or physiology which comes due to the combination of alleles.

If a trait of red feathers is denoted by R and the trait of black feathers is denoted by r, then R > r. Similarly, a trait of crests is denoted by C and the trait of non-crested is denoted by c, then, C > c.

Now, RRCC is crossed with rrcc, the F1 offspring have the genotype RrCc with the phenotype of red feathers with crests. Now, RrCc is selfed, it produces the ratio of 9:3:3:1. This is an example of a dihybrid cross.

Therefore, in this inheritance pattern, the ratio that best represents the phenotype of the F2 generation is 9:3:3:1. Thus, the correct option for this question is A.

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Answer:

Waste products such as gums, oils, latex, resins, and so on are stored in plant parts such as barks, stems, and leaves. Plants eventually shed these parts. Orange oil, eucalyptus oil, jasmine oil, latex from the rubber tree, papaya tree gums, and acacia gums are all examples of stored waste products.

Explanation:

Answer:

a. Joel burns more calories than Karen.

Explanation: is correct

Human activity such as the burning of fossil fuels has an effect on the overall increase of the Earth's temperature. Raising the Earth's temperature means that there is an increase of evaporation, melting of land and sea ice, and impacts on other processes of the water cycle that adversely affect the climate on Earth.

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Answer:

bts petson

Explanation:

look

Explanation:

Small and nonpolar (hydrophobic) molecules can freely pass through the membrane, but charged ions and large molecules such as proteins and sugars are barred passage.

Nonpolar and small polar molecules can pass through the cell membrane, so they diffuse across it in response to concentration gradients.

Answer:

a. Sciatic nerve

Explanation: is correct

Explanation:

Rock fragments squeeze together

Answer:c

Explanation:why i don’t know I just want the points

Answer:

root hairs

Explanation:

Answer:

my birthday just joking

the ans is world tiger day

Answer:

A lot of things are celebrated on 29th of July, and one thing is Global Tiger Day

Explanation:

Answer:

The oil killed and injured seabirds, sea otters, harbor seals, bald eagles, orcas and other wildlife. Eventually, oil from the spill affected more than 1,000 miles of Alaska's remote and rugged coastline.

Other Info That Might Help:

Image result for How has the Exxon Valdez oil spill impacted the environment? Environmental And Economic Impacts Prince William Sound had been a pristine wilderness before the spill. The Exxon Valdez disaster dramatically changed all of that, taking a major toll on wildlife. It killed an estimated 250,000 sea birds, 3,000 otters, 300 seals, 250 bald eagles and 22 killer whales.

Explanation:

I have answered This before and I got it right.

Hope this helps! :)

Fluorescent minerals contain particles in their structure known as activators, which respond to ultraviolet light by giving off a visible glow. Ultraviolet light is a form of electromagnetic radiation invisible to the human eye. There are two classified ultraviolet wavelengths: longwave and shortwave.

Answer:

d. All of the above

Explanation:

Answer:

looks yummy

Explanation:

What is that btw hahaha

Answer:

A dimer (/ˈdaɪmər/) (di-, "two" + -mer, "parts") is an oligomer consisting of two monomers joined by bonds that can be either strong or weak, covalent or intermolecular. The term homodimer is used when the two molecules are identical (e.g. A–A) and heterodimer when they are not (e.g. A–B).

Explanation:

Answer:

Essentially, the population that lived on Easter Island was trapped and eventually died off.

Explanation:

The people on Easter Island started creating the famous statues that I'm sure everyone knows about today, to help protect them from possible invaders. Once the people started settling in, they were provided with a number of natural resources and supplies, which unfortunately they had taken these resources for granted. Since they had been using all of the island's resources and using the many trees there for their civilization, they had no means of leaving the island once the last trees were gone. They were pretty much trapped on a dead island due to them causing the island to go through deforestation.

Answer:

22

Explanation:

the thermometer goes by 2

Explanation:

.

Leaves conduct photosynthesis, which converts energy from the Sun into chemical energy

Answer:

The logistic population growth happens as the growth rate declines as the population exceeds the carrying power. The highest number of people in a community that the ecosystem can sustain is carrying capacity.

Explanation:

A population may reach its carrying capacity in any generation, depending on a variety of factors such as the availability of resources, predation, competition for resources, and other ecological and evolutionary processes.

The carrying capacity of a population is the maximum number of individuals that can be supported by a particular environment over a given time period. A population may reach its carrying capacity in any generation, depending on a variety of factors such as the availability of resources, predation, competition for resources, and other ecological and evolutionary processes.

For example, if a population of animals is introduced to a new habitat with abundant resources, it may be able to grow rapidly and reach its carrying capacity relatively quickly. On the other hand, if the population is facing competition from other species or is subjected to predation or other limiting factors, it may take longer for the population to reach its carrying capacity.

It's important to note that the carrying capacity of a population is not a fixed value, and it can change over time due to changes in the environment or the population's own characteristics. For example, if the population grows to a size that exceeds the carrying capacity of its environment, it may begin to experience negative impacts such as resource depletion, disease outbreaks, or other factors that can reduce its size and bring it back down to the carrying capacity.

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Answer:

Its a Anaphase

because the chromatids of each chromosomes have separated and are moving towards the poles