Barnacles live on the skin of a whale. They obtain food from the water as the whale swims. The whale is not harmed nor does it benefit. What type of relationship is this?

A.
parasitism

B.
mutualism

C.
predator-prey

D.
commensalism

PLEASE I SERIOUSLY NEED HELPPPP

Answers

Answer 1

Answer: This is B an example of how the whale is not harmed. The barnacle gets food and the whale gets to swim. Everyone is happy!

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Gloria’s science teacher has given her a sample of an unknown metal along with this table. Gloria finds that her sample has a mass of 53.5 grams and a volume of 2.5 cubic centimeters. The sample can be identified as copper. iron. lead. platinum.

Answers

The answer is: [D]: platinum .
__________________________________________________________
Explanation: Given the information provided, we need to find the "density" of the unknown metal; in: "mass per UNIT volume". Then we need to look up the "density" values of EACH of the 4 answer choices (or at least until we get the corresponding density). To be thorough, we still should look up the density of EACH of the metals listed in the answer choices given. We look up these "densities" online, or in a specialty reference guide in university library, for instance.
__________________________________
First, let us calculate the density of the unknown volume:
______________________________________________
Density, "D", = m / V ; in which: D = density; m = mass; V = volume;
___________________________
We are given: mass, "m" = 53.5 g ; and:
Volume, "V" = 2.5 cubic centimeters = 2.5 cm³
_______________________________________________
D = 53.5 g / 2.5 cm³ = (53.5 / 2.5) g / cm³ = 21.4 cm³ ;
→ Round to "2 significant figures";
= 21 g/cm³
_______________________________________________________
We are given 4 (four) answer choices). Let us list EACH of the 4 (four) answer choices and their densities (researched).
____________________
Choice "A" : copper; (Cu) ; density = 8.96 g / cm³ ;
______________________________________
Choice "B" : iron ; (Fe) ; density = 7.874 g / cm³ ;
______________________________________
Choice "C": lead; (Pb) ; density = 11.34 g / cm³ ;
______________________________________
Choice "D": platinum; density = 21.45 g / cm³ ;
________________________________________
Clearly, Answer choice: [D]: "platinum" is the correct answer; with a density of "21.45 g / cm³ " ;
____________________________________________________
Since this value is the closest to our calculated value of
" 21 g/ cm³ "; or even "21.4 g/ cm³ " [our value before rounding down to 2 (two) significant figures].

The densities of the metals in all the other answer choices given are far from this value.
________________________________________________
I hope this explanation has been of some help.

Answer:

Yeah, its platnium.

Explanation:

Help me answer #2-3 plz and ty

Answers

2. Sickle cells are abnormally shaped red blood cells that have a reduced ability to carry oxygen.
3. Sickle cells are important because they cause a lot of harm to people with sickle cell anemia. Not only can they not carry enough oxygen, but they also clog capillaries in many tissues, which causes many issues and leads to the death of that person.
Hope that helped you.

Fill in the blank: ·In every energy transformation, some____ is released.
·When you climb a rope, you change ____ energy into ____ energy.
·In the muscle cells in your body, ____ energy is changed into ____ energy.
Any that you know would help!

Answers

In every energy transformation, some THERMAL ENERGY is released. When you climb a rope, you change CHEMICAL ENERGY INTO KINETIC ENERGY. In the muscles cells in your body, CHEMICAL ENERGY is changed into KINETIC ENERGY.
Energy can neither be created nor destroyed, because of this, energy usually remain constant but it can be converted from one form to another.

A scientist is using sonar to map the ocean floor while traveling on the ocean surface in a ship. She observes that the first sound pulse returns from the ocean floor much more quickly than the second sound pulse. What can she conclude based on this information?

Answers

she can conclude that there is probably a drop-off or that her boat was just over an oceanic shelf

Eversion is performed by which of the following muscles?

Answers

Peroneus longus, peroneus brevis and peroneus tertius

Final answer:

Eversion, a foot movement where the bottom of the foot is turned laterally (away from midline), is performed by the tibialis posterior muscle, assisted by the fibularis longus and fibularis brevis.

Explanation:

In the context of the question, eversion is a foot movement involving the intertarsal joints of the foot in which the bottom of the foot is turned laterally, away from the midline. This action is performed mainly by the tibialis posterior muscle. Other muscles that assist in this movement are the fibularis longus and the fibularis brevis.

The tibialis posterior muscle works to plantar flex (bend the foot downwards) and invert the foot (turn the sole of the foot inwards). In contrast, during eversion, the bottom of the foot turns outward, away from the midline of the body.

Understanding these movements and the muscles involved can help you visualize how our bodies stabilize while walking or running on uneven surfaces, make quick side-to-side direction changes in active sports, and more.

Learn more about Eversion here:

brainly.com/question/14928752

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Which is true of the population shown in this graph? A.
It shows the effect of overpopulation on a species.

B.
The number of individuals will eventually drop to zero.

C.
The population has increased until it reached its carrying capacity.

D.
There are no limiting factors to control population growth.

Answers

A population is the quantity of the considerable number of life forms of a similar gathering or animal varieties, which live in a specific land zone, and have the capacity of interbreeding. Based on the attached graph, I can say the answer is C. The population has increased until it reached its carrying capacity.

The true statement regarding the population shown in the graph is C.The population has increased until it reached its carrying capacity. The carrying capacity is the maximum size of a population that an ecosystem can sustain. On the graph we can see that the population increases its size during the time until it reaches a threshold, which is the maximal number of organisms in the population that can be sustained in the ecosystem.

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