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3 years ago

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The following is a difference between sexual and asexual reproduction. A. type of DNA B. number of tissue types C. number of par

ents D. one is dominant over the other

1 answer:

lutik1710 [3]3 years ago

3 0

Answer:

C.

Explanation:

Asexual reproduction produces identical copies of the parent. While sexual reproduction produces a mix of two parents DNA and features.

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Please helpme on time limit and explain

weqwewe [10]

Answer:

Net force is 100 N

Explanation:

You will use the formula to find the net force/force.

mass = 0.05 kg

acceleration = 2000 m/s^2

F = m × a

F = 0.05 kg × 2000 m/s^2

F = 100 N (Newtons)

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3 years ago

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2 years ago

What is an advantage of using nuclear power?

My name is Ann [436]

<span><span>Large nameplate capacity per plant, typically around 1 GW.
</span><span>Typically 90% capacity factor, maximizing output from the nameplate capacity.
</span><span>Small fuel transportation volumes as the fissionable material just isn't that big or heavy compared to equivalent fossil fuel BTU sources.
</span><span>Low CO2 per MWH on a full life cycle basis. ~12 grams which is only slightly more than wind / solar.
This is a reason nuclear is a much better source for one of the major pressing problems of today than fossil fuels: global warming.</span>No particulate matter pollution.No sulfur dioxide or other chemical pollution.<span>Low fatalities per TWH.
Nuclear is higher than renewables according to current statistics, but much, much lower than fossil fuel generation.</span></span>

Nuclear power generates lots of clean, stable energy.

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4 years ago

Read 2 more answers

A nerve is actually a long threadlike bundle of ________ that conduct electrical impulses.

KonstantinChe [14]

A nerve is actually a long threadlike bundle of dendrites that conduct electrical impulses.

<span>Dendrite word derived from the Greek word ‘dendron’ which means tree. They carry messages in the form of electrical impulses to cell body, there are also wire like nerves called axon. Sensory nerves and motor nerves are common types of nerves.</span>

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3 years ago

The bones from an animal found at an archaeological dig have a C614 activity of 0.10 Bq per gram of carbon. The half-life of C61

erastova [34]

C14 is an isotope used in radiocarbon dating techniques to date organic matter remains. The age of these bones is approximately<u> 6890 years.</u>

<h3>What is Carbon 14?</h3>

Carbon 14, also known as radiocarbon, is a radioactive carbon isotope.

Isotopes are the atoms of the same element -carbon- that vary in neutrons and, hence, in their massic number. They are alternative forms of the same element.

The radioactive C14 nucleus contains 6 protons and 8 neutrons and has a half-life of 5730 years.

The term half-life is a reference. It means that an organism that has been dead for 5730 years has half the C14 amount or concentration than the same organism had when it was alive.

Knowing the half-life of an element is useful to determine the age of the dead matter.

C14 is used in radiocarbon dating techniques or methods to estimate the age of fossils. This is a reliable technique used for dating organic samples that are less than 50,000 years old.

<u>Available data</u>:

The half-life of C14 is 5730 years
Bones activity of 0.10 Bq per gram of carbon

To answer this question we can make use of the following equation

Ln (C14T₁/C14 T₀) = - λ T₁

Where,

C14 T₀ ⇒ Amount of carbon in a living body. We know, by bibliography, that living organism activity is 0.23 Bq per gram of carbon. So, C14 T₀ = 0.23 Bq/g

C14T₁ ⇒ Amount of carbon in the dead body. C14T₁ = 0.1 Bq/g

λ ⇒ radioactive decay constant = (Ln2)/T₀,₅

T₀,₅ ⇒ The half-life of carbon 14 = 5730 years

T₀ = Time when the organism was alive

T₁ = Age of bones

Let us first calculate the radioactive decay constant.

λ = (Ln2)/T₀,₅

λ = 0.693/5730

<u>λ = 0.0001209</u>

Now, let us calculate the first term in the equation

Ln (C14T₁/C14 T₀) = Ln (0.1/0.23) = Ln 0.4347 =<u> - 0.833</u>

Finally, let us replace the terms, clear the equation, and calculate the value of T₁.

Ln (C14T₁/C14 T₀) = - λ T₁

- 0.833 = - 0.0001209 x T₁

T₁ = - 0.833 / - 0.0001209

T₁ = 6889.99 ≅ <u>6890 years</u>

The bones are approximately<u> 6890 years.</u>

You can learn more about dating organic matter with carbon14 at

brainly.com/question/4149380

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3 years ago