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kirza4 [7]
3 years ago
14

Whales have vestigial legs. This suggests they _____.

Biology
2 answers:
Alex777 [14]3 years ago
5 0
<span> descended from land animals</span>. Scientists believed that whales have evolved 50 million years ago from land dwelling ancestors who feed on fish from nearby sea. According to unearthed fossils, the early whale's body was more adapted to land but its relatives are more suited to live in water.
max2010maxim [7]3 years ago
3 0

Answer:

3rd one

Explanation:

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Use a Venn diagram to compare physical systems with social systems.
r-ruslan [8.4K]

Answer:Physical systems differ from social systems because a physical system refers to systems that rely on a group of physical parts to perform a function. Examples of a physical systems are solar systems or even an animals digestive system. Social systems are systems like an ant colony, wolf pack, or a town.

Explanation:

8 0
2 years ago
(c) The researchers predict that for any particular concentration of substrate, the C. aurantiacus enolase-catalyzed reaction is
Bess [88]

Answer:

<u><em>This is because the enzymes might work best at higher temperature than 37 degrees Celsius. Increase in temperature will increase the catalysis of the reaction.</em></u>

Explanation:

<em>When the temperature is increased, the molecules possess greater kinetic energy. This will allow more substrate and enzymes to collide. As a result, there will be more enzymes taking place in the reaction which will cause the rate of the reaction to increase.</em>

<em></em>

However, if the temperature goes too high, then the shape of the active site of the enzymes will get changed. The enzyme will deactivate and the reaction will stop.

7 0
3 years ago
Estas de acuerdo con la aplicación del principio de la física en ecología:¨la energía no desaparece ni se destruye, solo se tran
saveliy_v [14]

Answer:

Esta afirmación es correcta ya que la ley de conservación de la energía es también aplicable a sistemas vivos  

Explanation:

La ley de la conservación de la energía (la cual es la primera ley de la termodinámica) indica que la energía no se puede crear ni se puede destruir, solamente se transforma, de un tipo a otro. La ley de la conservación de la energía es de vital importancia para entender la existencia del mundo natural. En ecología, la energía fluye de un nivel trófico a otro en forma de biomasa, es decir, dentro de la cadena alimentaria. Esta energía no se puede crear ni destruir sino que es almacenada en los organismos, los cuales representan sistemas abiertos que intercambian materia y energía con el medio. Una vez dentro del organismo, una parte de esta energía es transformada (en plantas, por ejemplo, la energía es convertida en enlaces químicos durante la síntesis de carbohidratos), mientras que otra parte de la energía se elimina al exterior (por ejemplo, se disipa en forma de calor), pero la energía no se crea ni se destruye.

3 0
3 years ago
Through the digestion system, water is mainly absorbed in the A. gallbladder. B. stomach. C. large intestine. D. small intestine
bogdanovich [222]
I would say D. small intestine

If you want an explanation, here it is

After leaving the stomach, water is absorbed mostly in the early segments of the
small intestine, the duodenum, and the jejunum. A small portion of all water absorption occurs in the stomach and the colon: the small intestine absorbs 6.5L/day, whereas the colon absorbs 1.3L/day.
5 0
3 years ago
Read 2 more answers
Which factors improve soil fertility? Select the three correct answers.
Andrej [43]
A.Nitrogen
B.Humus
c.Manure
hope this helps
6 0
3 years ago
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