BIOLOGY HIGH SCHOOL

A crayfish’s swimmerets are used only for swimming.
a. True
b. False

Answers

Answer 1
Answer: Its false because lobsters have swimmerets as well and they dont use them only for swimming

Related Questions

Which statement describes how mutualism and commensalism are similar? A. At least one organism is hurt or harmed by the relationship. B. The relationship is beneficial to neither organism. C. At least one organism benefits from the relationship. D. The relationship benefits both organism.
Which answer lists the levels of the biosphere from smallest to largest, left to right?a. individual—population—biome—community—ecosystem b. ecosystem—biome—community—population—individual c. individual—population—community—ecosystem—biome d. ecosystem—individual—population—biome—community
Which is the correct pair of complementary nitrogenous bases in DNA?A. Adenine and thymineB. Cytosine and thymineC. Guanine and thymine
The understanding of evolutionary processes has helped scientists in the field of artificial selection. The best example of artificial selection is
A group of similar organisms that look somewhat alike, can reproduce, and whose offspring are fertile is known as a(n) _______________

Explain how the human body cools itself.

Answers

Hi there!


There is a way that the human body cools itself, but it sounds so weird!


Did you know that when you sweat after doing something constantly, the sweat tries to cool the body down? It's true!


I learned this is physical science class, and we tested it for ourselves. We ran around a bunch of times around my old school and then we started sweating. Not too long afterwards, we started cooling down because of the sweat.


Weird, right?


Hope this helps!

Message me if you need anything else! :D
Whenever we sweat our body empty's salt out and we can cool of by simply our sweat drying. :)

it can be scientifically proven if you need reasons.

i really hope that this helps you a lot
 

Organisms in the same ecosystem are all _______.

Answers

The answer is Independent

The atmosphere of Earth contains primarily which gas?A.) Carbon dioxide
B.) Methane
C.) Oxygen
D.) Nitrogen

Answers

The atmosphere of Earth contains primarily nitrogen, 78.09% of nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases. 

Answer:d

Explanation:test

Suppose that a dominant allele (P) codes for a polka-dot tail and a recessive allele (p) codes for a solid colored tail. If two heterozygous individuals with polka-dot tails mate, what's the probability of the phenotype and genotype combinations of the offspring?A. 50 percent chance of a polka-dot tail and 50 percent chance of a solid colored tail (50 percent PP; 50 percent pp)
B. 75 percent chance of a polka-dot tail and 25 percent chance of a solid colored tail (75 percent Pp; 25 percent pp)
C. 75 percent chance of a polka-dot tail and 25 percent chance of a solid colored tail (25 percent PP; 50 percent Pp; 25
percent pp)
D. 25 percent chance of a polka-dot tail and 75 percent chance of a solid colored tail (25 percent PP; 50 percent Pp; 25
percent pp)

Answers

Make a punnett square. The individuals are heretozygus (different) so their genotype is Pp.
P p
_______
P | PP | Pp |
_______
p | Pp | pp |
_______

There is...
Genotype (genetics)
25% chance homozygus polkadot. (PP)
25% chance homozygus solid (pp)
50% chance heterozygus polkadot. (Pp)

Phenotype (physical trait)
75% chance polkadot
25% chance solid.

The answer: C


*sorry the punnett square is so weird looking :) i hope this was helpful.


What causes continental lithosphere to become thinner and weaken?

Answers

Continental litosphere is made of relatively light weight minerals. It has a low density. Oceanic litosphetre is composed of a heavier minerals. Tensions and heat flow in the asthenosphere( beneath the litosphere) waekens the floating solid plate causing it to break apart. Thinning of the continental litosphere is result of hydration weakening. It is a special consequence of plate tectonics. By hydration weakening the basal portions of litosphere can be transformed into convecting asthenosphere.

Which of the following structures is most likely to be found in an autotrophic protist?

Answers

b. A chloroplast 

The options in the question contain both autotrophs and heterotrophs.
(a) A giant redwood tree = Autotroph
(b) A spider = Heterotroph
(c) A rose bush = Autotroph
(d) A mushroom = Heterotroph
(e) A blue whale = Heterotroph
Autrophs are the organisms that have the capacity to form their own food from inorganic substances like the carbon dioxide. 
Heterotrophs are the organisms that cannot produce their own food but depends on other animals or plants for their nutritional needs. 
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A lunar eclipse happens when there is a _____ Moon.
Are NOT dependent on a medium to travel.A. Tansverse wavesB. Longitudinal wavesC. Electromagnetic wavesD. Sound waves
Draw and label a typical structure of plant cell.Describe the function of all the parts of plant cell.
What is the correct way to write a scientific name?