Answer:
The correct option is: Richness and Evenness
Explanation:
Species diversity is the measurement of the biological diversity and relative abundance of each species found in a particular biological community.
It is comprised of the following three components:
1. richness (number of species)
2. phylogenetic diversity
3. evenness (relative abundance of each species)
The answer is (2). The question only ask the production of acid reacts with base. The acid has H+ ion and base has OH- ion. When they react, the production will always contain H2O.
Answer:
Hypothesis
Explanation:
A hypothesis is often described as a scientific guess.
Scientific method is a series of systematic approach developed to carry out scientific investigations.
These methods are:
Observation ----- Hypothesis --------- Theory ------------ Law
A hypothesis is a scientific explanation to an observation. It provides a platform for carrying out experiments to test ideas and to see how repeatable an observation can be.
Answer:
1. B
2. C
3. C
4. B
Explanation:
1. An atom of sulfur has an atomic number of 16. It has three electron shells and six valence electrons, therefore, it belongs to period 3, group VIA of the periodic table
2. Bromine has an atomic number of 35. It belongs to period 4 group VIIA of the periodic table. Therefore, it has four electron shells and seven valence electrons.
3. Argon has an atomic number of 18. It belongs to period 3, group IVA of the periodic table. Therefore, it has three electron shells and eight valence electrons.
4. The Lewis dot model use structures that represent the valence electrons of atoms within a molecule existing as lone pairs or when involved in bonding. They can be used to draw electrons that are involved in a collision during a chemical reaction.
