Endoskeleton is the internal support of the structure of an organism. an exoskeleton is the external support
Answer:
After being hunted almost to extinction, the humpback whale population has rebounded dramatically. Rapidly melting Antarctica ice poses a threat to coastal cities, but there is at least one species that is benefiting: Humpback whales are flourishing these days, due to an abundance of krill.
Pre-hunting population size may have been as many as 200,000-300,000 whales. They were estimated to number around 2,300 in 1998 and to be increasing between 2.4-8.4% per year. The IWC is undertaking an assessment of Antarctic blue whales at present.
<h3><u>Answer;</u></h3>
The above statement is <u>True</u>
Sweat glands, fur, and feathers are found on an endotherm.
<h3><u>Explanation;</u></h3>
- An endotherm is an animal that can control its internal body temperature. Endotherms' body temperature is usually much warmer than the temperature of the environment and usually stays about the same temperature.
- <em><u>Endoderms have adaptations that help them regulate their body temperature. For example; Sweat glands help keep endotherms cool. When an endotherm gets hot, the sweat evaporates and cools the animal's skin.</u></em>
- <em><u>Fur and feathers are another adaptation to regulate body temperature. All these coverings helps to keep the animals warm.</u></em>
The answer is E, graduated cylinder.
Meanwhile beaker and test tubes may have markings, but they're not as accurate. Especially in beakers, their wide diameter only makes an approximate volume, as it is very likely to have a reading mistake on that. Their main function is not to measure volumes, thus there marking may already have an mistake.
And in watch glass and evaporating dish, they're both very shallow and wide in diameter too, so they're not for measuring volumes. Plus, not all of them have markings.
And in graduated cylinder, the thin shape makes the reading a lot more accurate and the main purpose for that is to measure volumes. They also come in transparent tubes that can make the reading clear and easy to read.
