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bixtya [17]
3 years ago
13

The arrangement of atoms in a solid causes it to have a definite

Biology
1 answer:
erica [24]3 years ago
5 0
To have a definite shape and volume
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What species of the genus homo was the first to have bigger brains and limb proportions similar to modern humans, to use fire, a
Ket [755]

The extinct ancient human Homo erectus is a species of firsts. It was the first of our relatives to have human-like body proportions, with shorter arms and longer legs relative to its torso.

<h3>What are Homo erectus?</h3>

Homo erectus, an extinct species of Pleistocene archaic human, first appeared about 2 million years ago. Several human species, including H. heidelbergensis and H. antecessor, seem to have diverged from H. erectus, with the former being largely accepted as the ancestor of Neanderthals, Denisovans, and modern humans. Among the first recognizable representatives of the genus Homo are its specimens. The first known ancestor of modern humans, H. erectus, had a continental range that stretched from the Iberian Peninsula to Java. H. floresiensis and possibly H. luzonensis may have its origins in Asian populations of Homo erectus. H. erectus soloensis, from Java, dates to a time period between 117,000 and 108,000 years ago.

To learn more about Homo erectus from the given link:

brainly.com/question/13542251

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2 years ago
ALSO DUE SOON: A cell needs to transport materials across the cell membrane. Which of the following best describes the type of t
NikAS [45]

Answer:

b

Explanation:

because I hot this and it was right

3 0
3 years ago
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Please help me need this before 4:30pm
Romashka [77]

Answer:

the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

Explanation:

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3 years ago
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Which point in this graph shows the beginning of a period of exponential
IgorLugansk [536]

Answer:

C. Point B

Explanation:  

The exposed curve represents a logistic growth model. Population growth depends on density. Natality and mortality depend on the population size, meaning that there is no independence between population growth and population density.

When a population grows in a limited space, density rises gradually and eventually affects the multiplication rate. The population per capita growth rate decreases as population size increases. The population reaches a maximum point delimited by available resources, such as food or space. This point is known as the carrying capacity, K.

K is a constant that equals population size at the equilibrium point, in which the natality and the mortality rate get qual to each other.

Referring to population size as N, when

  • N<K, the population can still grow.
  • N approximates to K, the population´s growth speed decreases.
  • N=K the population reaches equilibrium,
  • N>K, the population must decrease in size because there are not enough resources to maintain that size.  

The sigmoid curve represents the logistic growth model.

  • Point A: During this period, the population size is relatively stable. Little growth is expressed.
  • Point B: At the beginning of this period, population growth increases softly. The more individuals are in the population, the more that reaches sexual maturity and get to reproduce, leaving fertile offspring. This fertile offspring also get to reproduce and leave more fertile individuals. At the end of the period, the curve shows a sharp slope, reflecting the significant increase in the population reproductive rate.  
  • Point C: At the beginning of this period, the population keeps on growing exponentially. But at the end of the period, the curve tends to stabilize, meaning that the population stops growing in size so fast. The population slow and gradually reaches the equilibrium point, K.
  • Point D: The population got to stabilize.
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2 years ago
Your science teacher has asked the class to make a cell city model. Which building or business in the city could represent the m
Marrrta [24]
The correct answer is <span>D) power company - produces energy. 

The Mitochondria produce the energy used by the other parts of the cell - called the ATP - in a process called the Krebs cycle. The Krebs cycle produces ATP - like the energy that a power plant produces and a secondary product is </span>CO_{23}, just like typical power plants also produce CO_{23} while producing energy. Both in mitochondria and in power plants, the more energy is produced, the more CO_{23}! 
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