Which of the following scenarios is representative of parasitism?a. Tapeworms living in a mammal’s intestinal tract
b. Remora fish attaching themselves to sharks
c. Birds feeding on insects stirred up by grazing animals
d. Birds eating scraps of food from a crocodile’s teeth

Answers

Answer 1
Answer:

Answer:

The correct answer would be a. Tapeworms living in a mammal’s intestinal tract.

Parasitism refers to the relationship between two organisms or species in which one organism lives in or on the body of the other.

The organism which lives on the body of the other is termed as the parasite while the other organism is termed as the host.

The parasites derive their nutrition from the host but they do not kill their host at once.

Examples may include tapeworm, hookworm, Plasmodium,flukes, fleas et cetera.

The tapeworm are the flat segmented flatworm that live as parasite in the intestine of the mammals. They derive their nutrition from the partly digested food of the host. It deprived the host of nutrients.

Answer 2
Answer: A because tapeworms are harmful organisms that slowly take the nutrients away from its host, in this case the mammal, which is considered a parasitism relationship.

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A recent study has shown an increase in the number of predators in an ecosystem. Which of the following is not a possible cause for the growth?
A gene codes for a protein that is 500 amino acids long. Which of the following mutations is likely to be the most deleterious? a) a missense mutation at the 490th codon b) a nonsense mutation at the 490th codon c) a nonsense mutation at the fifth codon d)a missense mutation at the fifth codon
Strawberry plants can reproduce several ways. A strawberry plant's main stem is called a crown. This crown produces spirals of leaves, runners, and flowers. The flowers become the strawberries that we love to eat. When days are long and warm, the plant produces runners. Runners are offshoots of the parent plant, sometimes called stolons. These runners are stems growing out from the crown along the ground. The runners grow roots and along the runner, "daughter plants" can develop. Most commercial strawberry growers use runners to produce new plants. Runners are a type of ___________ reproduction in strawberry plants.

Which of the following is true about renewable resources?A. They can be replaced by a healthy environment.

B. There are plenty for people to use, but only for a very short time.

C. Using them will hurt the environment.

D. They cannot be replaced after they are used up.

Answers

Answer:

Option A

Explanation:

Renewable resources can be replenished again and again with the right type of environment provided. For example hydroelectricity is generated again and again.

the answer should be 'a'
the second option: 'b' 

The ________ is the fluid component of blood.

Answers

Explanation:

Hey there!

The answer would bePlasma.

Reason:Plasmaiscomposedofmorethan90%ofwaterinit.Andrestareothermaterialslikeproteins,hormones,etc.

Hopeit helps....

Answer:

plasma

Explanation:

______are short and stout.
a. Endomorphs
b. Ectomorphs
c. Mesomorphs

Answers

Answer: A -endomorphs


Endomorphs usually have a shorter build and they gain fat very easily. Thus endomorphs are short and stout. They have very heavy arms. They have strong muscles in the upper leg.

Answer:

The correct answer is option A, Endomorphs

Explanation:

There are three body types in human beings and the characteristics features of all three body types is as follows:

1. Ectomorph - Skinny appearance, Small chest, joints,  bones and buttocks, Less body fat (without exercising), long limbs and Gains weight (build muscles) with difficulty

2. Mesomosph - Heavy body, Strong build, Gains muscles  and fat easily, have Athletic body of rectangular shape

3. Endomorph –  Soft  and round body, short limbs, Gains muscles  and fat easily

Thus considering the features of all three body types, it is clear that  Endomorphs are short and stout

Which Parts of the Water Cycle involve absorption of energy from the sun?

Answers

Evaporation and transpiration.

The evaporation process uses the sun radiation or sun’s thermal energy for vaporization of a water from the land or soil to be water vapor then in the air. Transpiration on the other hand is the same with evaporation that involves water molecules to be vaporized into the air but it is located in the stoma of the plants. It is like evaporation within plants. This is actually to have homeostasis in plants and still part of the water cycle.



If you lined up human skin cells side-by-side, how many would fit along the length of the paperclip in the sample problem above? Justify your answer with math.

Answers

Hi,

You did not provide the length of paper clip but i searched this exercise to find the length of the paper clip as So, a small paperclip measures 3.0 cm so i will answer your question according to this length.

The size of a human cell is around  30um and the question is asking that how many would fit along the length of the paper clip measuring 3cm.

                              3 cm = 30000 microns

                                          = 30000/30

                                           = 1000 cells.

So, if we line up 1000 human skins cells side-by-side, they would fit along the length of the paperclip.

Note: If the length of paper clip is different in your excercise like 1 cm etc, simply multiply the 1 with 10000 and divide the resultant value with 30, this way you can get cell number for the length of any clip.

Hope it helps!


Suppose there are 500 units of energy available for the producer level of energy pyramid approximately how many units are in it are available in the first level consumer

Answers

Always 10% of the energy is passed on to the next trophic level and 90% is lost... mostly heat: so if the producer has 500 units of energy then the primary consumer has 10% fromm 500 = so 50 units of energy is passed on to the next trophic level.