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1 year ago

1. How many stomachs does a crayfish have? What are they called?

Biology

1 answer:

sladkih [1.3K]1 year ago

4 0

Answer:

It is called "Gastric Mill" They have 3 stomachs

Explanation:

The teeth are part of a system called the “gastric mill.” Through rhythmic movements of these large teeth, of which there are three, their stomachs can actually crush food as a prelude to further digestion.

You might be interested in

If matter (mass) has never been observed by any process or experiment to be created or destroyed, then using inductive reasoning

svp [43]

Answer:

B.the known laws of science cannot account for the origin of mass.

Explanation:

i just finish that test

4 0

2 years ago

According to Piaget's theory of cognitive development, which of the following is true of children in the concrete operational st

Anika [276]

Answer:

A. They center on the motives of wrongdoers as well as on the amount of damage done when assigning blame.

Explanation:

The Concrete Operational Stage, according to Piaget, refers to a stage that begins around age 7 and ends around the ages of 11 or 13.

During this stage, children are now capable of thinking in a more logical manner and their moral judgement has become subjective as <u>they now center on the motives of wrongdoers as well as on the amount of damage done when assigning blame</u>. For instance, they are able to judge another child according to the amount of damage she/he has done and whether it was done in purpose or accidentally.

They can also center on two dimensions of a problem at once and have thoughts that involve tangible objects instead of abstract ideas.

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2 years ago

Natural selection disrupts the _______ because one allele of a gene is preferred over another, changing the allele frequencies o

steposvetlana [31]

genetic drift

Explanation:

Genetic drift is changes in allele frequencies of a gene pool due to chance or random events. This can occur in large or small populations. Genetic drift causes gene pools of two isolated populations to become dissimilar as some alleles are lost and other are fixed.

6 0

2 years ago

How do populations survive when the environment changes

Anna [14]

Answer:

i don't know if im right but honestly i could be A B or C

Explanation:

but i would say if its humans adapting to the environment and if an animal probably the same thing but maybe A more than C

8 0

2 years ago

If bicoid mRNA is injected at the anterior end of an egg from a bicoid mutant mother, what would the phenotype of the resulting

JulijaS [17]

If the larva had one head at the posterior pole, it would be normal. The larva would have two heads, one at the front of its body and the other in the center.

What is bicoid mRNA?

When translated, bicoid protein forms a morphogen gradient that shapes the embryo's head and thorax if bicoid mRNA localizes to the anterior of the Drosophila egg.

How does the egg's bicoid RNA influence development?

According to recent research, Bicoid specifies the anterior of the Drosophila embryo in two different ways. It initially suppresses posterior development. It accomplishes this by attaching to and preventing caudal RNA, which is distributed throughout the egg and early embryo, from being translated.

To know more about bicoid mRNA, visit:

brainly.com/question/15864503

#SPJ4

7 0

4 months ago