Answer:
All mammals, like dogs, cats, and humans; reptiles, amphibians, fish, birds, and even insects.
Explanation:
All mammals, like dogs, cats, and humans; reptiles, amphibians, fish, birds, and even insects are the animals that have a complete tube-like gut with two openings. A system having a tube with two openings i.e. mouth and an anus is called tubular system. In this tubular system, the animals eat with one opening and the other opening is used for excretion of waste and nitrogenous materials from the body so that's why most of the animals have two openings.
The hormone described above is the hormone Melatonin.
Melatonin is a hormone secreted by the pineal gland in the brain, which helps regulate other hormones and maintains the body's circadian rhythm. This rhythm is an internal 24 hour clock that plays a critical role when we fall asleep and when awake. When it is dark the body releases more melatonin.
Answer:
<em>between </em><em>an </em><em>animal</em><em> </em><em>cell </em><em>and </em><em>a </em><em>plant </em><em>cell </em><em>there </em><em>are </em><em>some </em><em>parts </em><em>that</em><em> </em><em>are </em><em>similar</em><em> </em><em>and </em><em>carry </em><em>out </em><em>the </em><em>same </em><em>function </em><em>like:</em>
<em>both </em><em>have </em><em>a </em><em>cell </em><em>membrane</em><em> </em><em>which </em><em>selects </em><em>what </em><em>goes </em><em>in </em><em>the </em><em>cell.</em>
<em>both </em><em>have </em><em>cytoplasm</em><em> </em><em>which </em><em>holds </em><em>the </em><em>protoplasm(</em><em>the </em><em>living</em><em> </em><em>part </em><em>of </em><em>the </em><em>cell)</em>
<em>both </em><em>have </em><em>a </em><em>nucleus</em><em> </em><em>which </em><em>carries </em><em>out </em><em>all </em><em>cell </em><em>activities</em><em> </em><em>and </em><em>holds </em><em>threads </em><em>of </em><em>DNA </em><em>called </em><em>chromosomes</em>
<em>both </em><em>have </em><em>a </em><em>mitochondria</em><em> </em><em>which </em><em>is </em><em>the </em><em>power </em><em>house</em><em> </em><em>of </em><em>the </em><em>cell</em>
<em>both </em><em>have </em><em>golgi </em><em>bodies </em><em>which </em><em>modify</em><em> </em><em>and </em><em>carry </em><em>proteins</em><em> </em><em>from </em><em>sites </em><em>of </em><em>synthesis</em><em> </em><em>to </em><em>sites </em><em>of </em><em>reaction</em>
<em>I </em><em>hope</em><em> this</em><em> helps</em>
Answer:
The cells circulate in the atmosphere, then joining together, and eventually, they clusters, (clouds) get too heavy, and rain falls.
Explanation:
