Answer:
b im pretty sure
Explanation:
Population density is the average number of individuals in a population per unit of area or volume. For example, a population of 100 insects that live in an area of 100 square meters has a density of 1 insect per square meter.
A device that measures atmospheric pressure that’s displayed by the height of a column of mercury.
Answer:
The correct answer would be - 1. group 2.period 3. less 4. more
Explanation:
elements that have a place with same group contains same number of valence electrons. Thus, they will in general show comparable chemiccal properties.
At the point when we move over a period at that point number of electrons get added to a similar shell. Therefore, there will be no expansion in size of elements.
Additionally, metals are the elements that have a place with group 1, 2 and d-block group are otherwise called metals. Metallic character of elements diminishes when we move left to directly in a periodic table.
As most responsive metals are put on the left half of occasional table.
Since, size of elements increases on descending the groups. Along these lines, a elements can lose its valence electrons due to the less forrce of ttaraction between valence electrons and its neucleus.
Answer:
As of plants, bioluminescent algae fix carbon dioxide in the presence of sunlight and release oxygen. Further, during this process, they produce light as a part of photosynthesis products. Therefore, the use of bioluminescent algae can reduce anthropogenic carbon dioxide from the environment.
Bioluminescent algae-based lamps are being prepared by scientists to overcome these environmental concerns. Furthermore, these lamps would be used as street lights and reduce energy demands as well (burning of fossil fuels).
