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Butoxors [25]
3 years ago
14

The brain of Homo is:

Biology
1 answer:
musickatia [10]3 years ago
4 0

Answer: C) larger than the chimpanzee-sized brain of Australopithecus.

Explanation:

The brain homo are larger than the chimpanzee size brain of australopithecus as, humans develop significantly the larger brain size and relatively the smaller faces, which are the less progressive small teeth and the jaws and the length of the arm are comparatively shorter. Australopithecus are very extinct hominid and they are existed early in this planet.

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In prehistoric times volcanic eruptions caused mass extinctions of many species of marine organisms attached to the ocean floor.
Paraphin [41]
Volcanic eruptions spew alot of carbon dioxide and sulphur dioxide into the atmosphere. These gases when mixed with rain and run into oceans increase their pH. Additionally, these gases are greenhouse gases that increases atmospheric temperatures and consequently those of the seas and oceans.
Low pH and high temperatures kill marine life.
3 0
4 years ago
When an action potential arrives at the axon terminal of a motor neuron, which ion channels open?
HACTEHA [7]

Answer:

Calcium voltage gated ion channels

Explanation:

There are two types of ion channels involved in the neuromuscular junction and end plate potentials: voltage-gated ion channel (responsive to changes in membrane voltage which cause the voltage gated ion channel to open) and ligand-gated ion channel (responsive to certain molecules such as neurotransmitters).

The resting membrane potential of a motor neuron goes from -70mV to -50 with a higher concentration of sodium outside and a higher concentration of potassium inside. <em>When an action potential propagates down a nerve and reaches the axon terminal of the motor neuron, the change in membrane voltage causes the calcium voltage gated ion channels to open allowing for an influx of calcium ions. </em>These calcium ions cause the acetylcholine vesicles  to release acetylcholine via exocytosis into the synaptic cleft.

I hope you find this information useful and interesting! Good luck!

3 0
3 years ago
In 1998, scientists discovered that the expansion of the universe has been accelerating.
KengaRu [80]

Answer:

Option A (dark energy) is the right answer.

Explanation:

  • A hypothetical supplier of power that creates a force that contradicts gravity, which is assumed to have been the catalyst of accelerated universe development.
  • Hypothetically, dark energy counteracts the kinetic energy including its beginning of the globe, meaning that perhaps the multiverse does not have intrinsic curvature, although observational measurements presently indicate.

Some other three choices have no relation to the particular situation. Thus option A would be the right solution.

8 0
3 years ago
Un ascensor recibe 1200 calorías y realiza 2200 joules de trabajo ¿Cómo se puede medir la energía interna del sistema?
bogdanovich [222]
Solución: El problema indica que se le están suministrando 700 calorías de calor, eso quiere decir que Delta Q será positivo, por otra parte nos dice que al sistema se le aplicará un trabajo de 900 Joules, aquí el signo de Delta W tendrá que ser negativo, puesto que se la están aplicando al sistema.

Sabiendo ese análisis podemos dar solución al problema de la siguiente forma:
3 0
3 years ago
Just checking how this app works will you answer this just so i can figure out if this works lol
DiKsa [7]
Just ask a question you have a problem understanding lol
5 0
3 years ago
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