Crayfish are invertebrates which means they don't have a backbone. They are also arthropods, which means that they have a protective exoskeleton on the outside of their body. Other arthropods include insects, spiders, and centipedes. Crayfish continually shed their exoskeleton and regrow a new one. During this transition is when they are most vulnerable to predators because they aren't protected by their outer shell.
Crayfish are found all over the world in many different freshwater environments, such as rivers, creeks, springs, and swamps. But this doesn't necessarily mean that you will be able to find them. They are somewhat cryptic because they dig out homes for themselves under rocks and blend in well with their environment. Crayfish will ardently defend this dwelling against intruders using their strong front claws
Answer: A. ionic
In ionic bonds electron are transferred from one atom to another. In ionic bonds , the metal atom loses electrons to become positively charged cation whereas the nonmetal atom accepts those electrons to become negatively charged anion.
The α-amino group of many amino acids is transferred to α-ketoglutarate to form glutamate, which is then oxidatively deaminated to yield ammonium ion (NH4+).
Answer:
Photosynthesis occurs in the chloroplast of the plant cell. Carbon dioxide, water, and the sun's energy are necessary for the chemical reactions of photosynthesis. The products of photosynthesis are glucose and oxygen.
Explanation:
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Answer:
The outside only looks pigmented because of the color reflecting off it, but the inside is white and unpigmented because it is reflecting all the colors. Does this help?
