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WARRIOR [948]
3 years ago
13

2. Can the classification system change? If so, provide an example of a way it has changed in the past. (2 points)

Biology
1 answer:
Elis [28]3 years ago
7 0

Yes, classification system is still evolving together with our knowledge.

But, before changing the name (e.g. of a species) it is important to collect and gather a wealth of information in order to support that change. Classification system is still evolving. The reasons for the changes are DNA analyzes. It is the new way for discovering relation between organisms and put them in the right context (classification used to be based on morphological characteristics).

Change in classification can be shown in an example of fungi. In the 90s fungi classification included only phyla Chytridiomycota and Zygomycota. Now theyhave been classified mainly on the basis of characteristics of their sexual reproductive structures. So, there are 7 phyla now: Microsporidia, Chytridiomycota, Blastocladiomycota, Neocallimastigomycota, Glomeromycota, Ascomycota, and Basidiomycota

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5 0
2 years ago
These are the highly reactive elements located in Group 1 of the periodic table. These elements have one electron in their outer
cupoosta [38]
"These" should be referring to Alkali Metals.

They include metals such as Lithium, Sodium, Potassium etc.
They're classified as Group I elements because they all have one outmost shell electrons. This is why these metals are so reactive because they only need to lose one electron in order to achieve the octet of electrons (or duplet for Lithium), which means complete outmost shell electrons (2 or the 1st shell, others are 8). 

The reason why they're especially reactive to Halogens (Group VII) elements are that Halogens have 7 outmost shell electrons, which only needs one more electron in order to get to the octet of electrons. So, if an Alkali metal reacts with a Halogen, the metal would give one of their electrons to the Halogen, that way, both of the elements can have an octet of electrons (or duplet).
5 0
3 years ago
11. What is the number of times a machine multiplies force called.
alisha [4.7K]

Answer:

C.

Explanation:

I don't really know why. I just googled it and it said...

the number of times a machine multiplies the effort force: mechanical advantage

Hope this helps

7 0
2 years ago
cells that protect the body by engulfing foreign cells or producing antibodies are a. red blood cells b. cilia c. platelets d. w
Ne4ueva [31]
Cells that protect the body by engulfing foreign cells or producing antibodies are D. White blood cells.
4 0
3 years ago
Read 2 more answers
Why is it important that the phospholipid bilayer be both hydrophobic and hydrophilic?
oksano4ka [1.4K]

B) They maintain balance in the cell.

That mix of hydrophobic and hydrophilic, in other words, the mix of repelling and attraction maintains the aqueous balance in a cell and it's exterior.



Hope it helped,



BioTeacher101

7 0
2 years ago
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