Answer:
The two main variables in an experiment are the independent and dependent variable. An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.
Answer:
A cell is the smallest basic unit of life, it is the fundamental unit of life that can replicate to give other cells. Tissues is a group or a collection of cells that have been specialized to perform a specific function. There are four main types of tissues in humans namely, connective tissues, epithelial tissues, muscle and nervous tissue. A group of tissues then forms an organ and then several organs forms an organ system
Explanation:
During a new or full moon
Explanation:
This is because, during these lunar phases, there is a spring tide – during high tides. Therefore because the ocean water-levels are high, storm surges push more water towards the coast leading to more destruction. Remember a storm surge is the pushing of water towards the coastline by strong cyclonic winds. A combination of astronomical tide and a storm surge is called a storm tide and is the most destructive.
Biodiversity decreases, and the overall health of the ecosystem decreases.
Answer: Option D
<u>Explanation:</u>
In a niche when two different species occupy a niche competition arises between them. In due course both the species fight for existence and nature selects the best adaptable one to win. The other species either reduces in its population or gradually in struggle for existence they deteriorate and die.
Hence a decrease in bio diversity happens here due to natural selection. If the biodiversity is decreased in a particular niche it affects the growth of different species which in turn affect the whole ecosystem resulting in decrease of the overall health in an ecosystem.
Carbon forms the key component for all known life on Earth. Carbon is the basis of all molecules. Its is easily able to bond because of the 4 valence electrons.
