Asking questions to check your perceptions is called ____________

12. Removing an organism from an ecosystem will have which of the following affects? Select all that apply.

lutik1710 [3]

Answer:

B and D

Explanation:

Biodiversity comes from having multiple types of organisms. This also allows different organisms to eat and create nutrients that is needed by all other organisms in the ecosystem.

4 0

3 years ago

For each genotype below write whether it is homozygous or heterozygous

Yuki888 [10]

Answer: H O homozygous

Explanation:

4 0

3 years ago

A certain buffer is made by mixing a weak acid HA and its conjugate base A–. When HA is present at a concentration of 0.5 mM and

MAVERICK [17]

Answer:The ratio of the concentrations of $HA$ and $A^-$ when the buffer has a pH of 7.02 is 0.69

Explanation:

The dissociation constant for formic acid = $K_a=1.8\times 10^{-4}$

Concentration of HA= 0.5 mM

Concentration of $A^-$ = 0.1 mM

pH = 6.16

First we have to calculate the value of $K_a$ .

Using Henderson Hesselbach equation :

$pH=pK_a+\log \frac{[A^-}{[HA]}$

Now put all the given values in this expression, we get:

$6.16=pK_a+\log (\frac{[0.1]}{0.5})$

$pK_a=6.86$

To calculate the ratio of the concentrations of $HA$ and $A^-$ when the buffer has a pH of 7.02.

Using Henderson Hesselbach equation :

$7.02=6.86+\log \frac{[A^-]}{[HA]}$

$\frac{[A^-]}{[HA]}=1.44$

$\frac{[HA]}{[A^-]}=0.69$

Thus the ratio of the concentrations of $HA$ and $A^-$ when the buffer has a pH of 7.02 is 0.69

7 0

3 years ago

From the ninth week through birth, a developing baby is in the _____ period of prenatal development.

IceJOKER [234]

the baby is in the 2nd trimester...

5 0

3 years ago

What animal can detect sound at a frequency of 67,000 Hz?

ivolga24 [154]

Bats are able to do that . Hope this helps!!!!

5 0

3 years ago

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Asking questions to check your perceptions is called _____________.