They need an independent variable, in this case it should have been the fish food. Everything should be identical except the fish food, from what I read , it doesn't say anything about what type of food they used, or the dosage.
Answer:
group of interacting populations in a defined place and the nonliving factors that affect them
Explanation:
An ecosystem is a group of interacting populations in a defined place and the nonliving factors that affect them.
An ecosystem can also be a natural unit composed of living and nonliving components whose interactions result in a stable self-supporting system. Ecosystems are generally categorized as either aquatic or terrestrial.
Answer:
- Genotypes: 50% (Ww) and 50% (ww)
- Phenotypes: 50% will have white wings, and the other 50% will have yellow wings.
- Percent chance: 50% (heterozygous - Ww - yellow) and 50% (homozygous recessive - ww - white)
Explanation:
To answer this question, we make a Punnett square which looks like this:
You cross a heterozygous butterfly (Ww) and a homozygous recessive butterfly (ww), and it gives you:
Ww ww
Ww ww
As you can see from this Punnett square, 2 out of 4 have Ww, which makes it heterozygous and since they have the dominant W trait on them, they result to have white wings. The other 2 have yellow wings, since they have only w on them (recessive trait). Calculate percentages, you get 50% Ww and 50% ww.
Answer:
Petrified fossils are formed when minerals replace all or part of an organism.
The baglike structure that contains a clear fluid in which the developing embryo floats is called the Amnion.
<h3>
What is an Amnion?</h3>
The membrane that covers the embryos of reptiles, birds, and the mammals when first formed is called Amnion.
It contains amniotic fluid, which serves as an amniotic sac that provides a protective shield for the developing embryo. Together with the amnion, contains the
- chorion
- the yolk sac
- allantois
with different functions to protect the embryo.
The amniotic sac in humans is enclosed in the uterus while for birds, reptiles ,it is enclosed in a shell.
Read more on amnion here : brainly.com/question/23393678
