D is the answer to 3 | C is the answer to 4
Answer:
Fermentation is the process in which a carbohydrate source is converted in the absence of oxygen
<h2>Sewerage & water system</h2>
Explanation:
- The purpose of municipal water delivery systems is to move consumable water from a water treatment office to private purchasers, for use as drinking water, water for cooking, water for sterile conditions, and other water use in a household situation. Water supply additionally is basic for business furthermore, industry to work in a metropolitan domain.
- A civil water supply systems can't support its clients except if there is a ceaseless stockpile of water to meet household utilization needs in the broadest sense and water requirements for auxiliary fire assurance. Water sources should be chosen cautiously to ensure that this central necessity is met.
- Hence, the right answer is "a fair and accurate evaluation of sewerage & water system"
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
Im pretty sure that it is (A) because blood pumps to get every where through your body. If it didn't one half of your body would feel cold or numb.
