Answer:
n stage 13, all four limb buds are present. In stage 13, the upper limb buds resemble flippers. In stage 23, the upper limb shows well-formed arm, elbow, wrist, and fingers. In stage 23, the lower limb shows well-formed toes, feet, and knees.
Explanation:
Answer:
Another 2014 study found that salamanders, thanks to their taste for leaf-chewing insects on forest floors, can even help fight climate change.Because of amphibians' appetites for mosquitoes, they're able to help reduce the spread of mosquito-borne illnesses such as malaria.
Single Tree Selection : is the most common cutting in which scattered individual trees of multiple age classes
Group selection : is under this system , a number of group or small openings created by the removal of several adjacent trees
I hope that's help and sorry for the late answer !
Viruses are actually smaller than bacteria but they're not bacteria. So D is wrong.
Viruses don't grow and aren't made of cells, and despite being able to reproduce, they're not living. So C is correct.
As for the other two, I'm not entirely sure what they mean but C is the answer.
In a controlled experiment, the control group is compared with an experimental group.
Explanation:
A set of variables or data is considered as the control group that remains fixed or constant in its normal usual state; while all the other variables or data are identical with this control group, except one independent variable at a time. This is to observe the changes when that one variable is allowed for variations at a time.
This independent variable which undergoes changes is in the experiment group while the remaining constant group is the control group. The dependent variable changes with changes in the independent variable.
By comparing the control group against the experimental group, uncertainty in results are avoided.
