Differences in traits are called "blank" and explain why siblings don't look exactly alike. *

How can a liquid be drawn into a pipette safely?

Reptile [31]

Answer:

By squeezing a bulb attached to the wide end of the pipette

Explanation:

You squeeze the bulb and place it on the wide end of the pipet. Then you place the tip of the pipet in the solution and release your grip to pull it into the pipet.

B is wrong, unless you want to accidentally get a mouthful of the sulfuric acid or cyanide you are pipetting.

C and D are wrong. Even the wide end of a pipette is too narrow to fill with either a beaker or an eyedropper.

5 0

3 years ago

The first P-wave of an earthquake took 11 minutes to travel to a seismic station from the epicenter of the earthquake. What is t

iris [78.8K]

Answer:

$\large \boxed{\text{5280 km; 25.5 min }}$

Explanation:

1. Distance from epicentre

The average speed of P-waves is about 8 km/s.

(a) Convert minutes to seconds

$\text{Time} = \text{11 min} \times \dfrac{\text{60 s}}{\text{1 min}} = \text{660 s}$

(b) Calculate the distance

$\text{Distance} = \text{ speed} \times \text{time} = \dfrac{\text{8 km}}{\text{1 s}} \times \text{660 s} = \textbf{5280 km}\\\\\text{The seismic station's distance to the epicentre is $\large \boxed{\textbf{5280 km}}$}$

2. Time for S-wave

The average speed for an S-wave is about 3.45 km/s.

$\begin{array}{rcl}\text{Distance} & = & \text{speed} \times \text{time}\\\text{5280 km} & = & \dfrac{\text{3.45 km}}{\text{1 s}} \times \text{time}\\\\5280 \times \text{1 s} & = & 3.45 \times \text{time}\\\text{Time} & = & \dfrac{\text{5280 s}}{3.45}\\\\ & = & \text{1530 s}\\& = & \textbf{25.5 min}\\\end{array}\\\text{It took the first S-wave $\large \boxed{\textbf{25.5 min}}$ to arrive.}$

8 0

3 years ago

Which materials are excreted through sweat glands in the skin?

Morgarella [4.7K]

Answer:

salt, urea, and water

6 0

3 years ago

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Clown fish have evolved to live safely between the stinging tentacles of certain sea anemones. The fish receive protection from

KiRa [710]

Answer:

The correct answer is d. mutualism

Explanation:

Mutualism is the interaction between two individual where both individuals get benefits from each other. So during mutualism, both partners help in increasing the fitness of each other by supporting each others survival.

Sea anemones have stinging tentacles that do not affect clownfish so sea anemones provide protection to clownfish and clownfish provide food to sea anemones, and clean the algae and leftovers from the surface of sea anemone.

Therefore both the partners get benefits from the action of opposite partners so this relationship is an example of mutualism.

6 0

3 years ago

What is the most likely consequence if a living organism can not adapt to its environment?

Solnce55 [7]

It would eventually go extinct. If you put a shark in a fresh water pond and it can't adapt to fresh water it will die.

7 0

3 years ago

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