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3 years ago

In which of these behaviors is it critical that members of the same species be able to recognize one another?

2 answers:

7 0

The behavior which is critical that members of the same species be able to recognize one another is courtship.
It is a collection of instinctive behaviors which result in mating and eventual reproduction.
Animal courtship may be rather simple which involves a small number of chemical, visual, or auditory stimuli. It may be also be a highly complex series of acts by two or more individuals, using many different modes of communication.

Arisa [49]3 years ago

5 0

Answer:

The answer is D: Courtship behavior

Explanation:

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We will soon exceed earth’s carrying capacity

ExtremeBDS [4]

Answer:

Wait like actually? Do we need to get to Mars?

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3 years ago

Read 2 more answers

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 6890 years.

<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.

Available data:

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

λ = 0.0001209

Now, let us calculate the first term in the equation

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

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 ≅ 6890 years

The bones are approximately 6890 years.

You can learn more about dating organic matter with carbon14 at

brainly.com/question/4149380

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2 years ago

According to the text, the interaction of what three developmental domains shapes human development?

SCORPION-xisa [38]

Answer:

physical, cognitive, socio-emotional

Explanation:

The complete question is as follows:

According to the text, the interaction of what three developmental domains shapes human development?

Select one:

a. social, physical, moral

b. mental, physical, environmental

c. physical, cognitive, socio-emotional

d. environmental, genetic, perceptual

The term domain describes the specific aspects of the change and growth that takes place in relation to the human development.
The three main developmental domains that shapes human development are :physical, cognitive and socio-emotional domains.
The physical domain includes the physical changes and growth that takes place in a human body. It also includes the development of the motor skills and the use of senses.
The cognitive domain covers the aspect of development creativity and intellectual skills. It includes various factors such as memory, attention, planning, thought processing and accomplishing goals.
Socio-emotional domain includes the ability to deal with emotions and udnerstanding others emotions. This is a phase of developing attachments and interaction skills. During this phase the cooperative nature, empathatic nature and morality of an individual develops.