Hello!
An initial observation is the first thing a scientist notices about a topic before conducting the experiment. We can see that it is the first thing in the paragraph in this case, that dandelions grow as unwanted weeds in many lawns.
The hypothesis is the guess about the result of an experiment made before the experiment is conducted. In this case, it is that a weed killer (Killimal) would kill all the dandelions while leaving the grass healthy. This is not specifically a guess made by the scientist, but more like a prediction he wanted to verify.
An independent variable is the variable being changed in the experiment by the scientist. Here, it is whether Killimal was sprayed or not.
The dependent variable is the variable being measured, and the one being affected by the independent variable. His observation would be whether the grass and dandelions would be killed. This is because the weed killer would be directly affecting whether or not these would be killed.
The control variables are ones which are kept the same in the experiment as to not interfere with the final results. In this case, it would be the density of dandelions, the amount of sunlight, and the amount the plants were watered. These were kept exactly the same, as they could've affected the dependent variable if changed.
The control group was the one that is not impacted by the independent variable. The control group makes sure that it actually is the independent variable affecting the dependent, and it isn't some outside unknown variable. This would be the plot without the Killimal.
The experimental group is the one being experimented on from the independent variable. This would be the plot with the Killimal.
Hope this helps!
Straightforward, dependable core facility HLA tissue typing service
Using state of the art genotyping technologies as used in HLA typing for organ transplantation
We work with genomic DNA, Saliva, Whole Blood, or Cryopreserved cells
Detailed results typically sent in 3 weeks
typeHLA Tissue Typing Service Overview
Typing technology options
New Next Generation Sequencing (NGS)
PCR-SSOP using Luminex®
(previously called Tier 1)
HLA Class I loci available
A, B and C
(whole Class I panel reported)
A, B, C
(can be ordered individually)
HLA Class II loci available
DRB1, DPB1 and DQB1
(whole Class II panel reported)
DRB1, DRB3,4,5, DPA1*, DPB1, DQA1*, DQB1
(can be ordered individually)
Resolution of typing data
Fully resolved 4 digit (allelic level) typing with no degeneracy for all samples
4 digit (allelic level) typing but with some degeneracy
Features / Restrictions
Only available for ordering whole Class I panel (3 loci) or whole Cass II panel (3 loci) or whole Class I and Class II panel (6 loci)
Can be ordered for each locus individually
Turnaround time (approximate)
3 weeks
Sample formats accepted
gDNA, Cryopreserved PBMCs/other Cells, Blood, Saliva
Report format
Electronic format (PDF, XLS) via secure webserver
Answer: I think it’s D. Pls don’t bash me if it’s wrong
Since the death rate is higher than the birth rate we can assume that it will be negative. 5-15 is -10 for their life. immigration is also lower than the emigration. 2-4 is -2. adding -2 and -10 will give us -12, hope this helps.
Answer:
An electromagnetic wave
Explanation:
An electromagnetic wave is a transverse wave that can travel across space as well as through matter. When it travels through space, it doesn't lose energy to a medium as a mechanical wave does.
