Answer:
Density, ![d=0.82\ g/cm^3](https://tex.z-dn.net/?f=d%3D0.82%5C%20g%2Fcm%5E3)
Explanation:
It is given that,
Mass of unknown liquid is 20.5 kg
Volume, V = 25 mL
We know that, 1 mL = 1 cm³
25 mL = 25 cm³
The density of the substance is equal to its mass per unit volume. So,
![d=\dfrac{m}{V}\\\\d=\dfrac{20.5\ g}{25\ cm^3}\\\\d=0.82\ g/cm^3](https://tex.z-dn.net/?f=d%3D%5Cdfrac%7Bm%7D%7BV%7D%5C%5C%5C%5Cd%3D%5Cdfrac%7B20.5%5C%20g%7D%7B25%5C%20cm%5E3%7D%5C%5C%5C%5Cd%3D0.82%5C%20g%2Fcm%5E3)
So, the density of this substance is
.
Answer:
Introduction
Carbon is a very important element to living things. As the second most common element in the human body, we know that human life without carbon would not be possible. Protein, carbohydrates, and fats are all part of the body and all contain carbon.
Carbon occurs in many forms on Earth and is found throughout the environment (Figure below). The element moves through organisms and then returns to the environment. When all this happens in balance, the ecosystem remains in balance too. In this section, let’s follow the path of a carbon atom over many years and see what happens.
Explaination:When your body breaks down food to produce energy, you break down protein, carbohydrates, and fat, and you breathe out carbon dioxide.
<span>Loss of biodiversity can result in a reduction in goods and services that are derived from the environments that have an impact on human health. This includes the availability of fresh water, food, and natural genes and chemical products important for human health. An example of effects of biodiversity loss is its impact on agriculture. Biodiversity loss leads to reduced agricultural yields</span>
Answer and Explanation:
nutrition
- chloroplasts and chlorophyll
transport
- endoplasmic reticulum
cellular respiration
- mitochondria
excretion
- vacuoles
synthesis and assimilation
- ribosomes
growth
- chromosomes
regulation (& metabolism)
- nucleolus
reproduction
- nucleus
locomotion- cell membrane
The answer is B. Paleozoic
This era was the first era where insects, amphibians, and reptiles roamed the Earth.
Hope this helps!