Answer:
The constants: 14 hours of light per day; food one time per day 5 oz; wheel for exercise; cage size
The independent variable: the temperature
The dependent variables: length and weight
Data to be collected: weight of mice; length of mice
A flaw in the experiment: the sample size is to small to be random; it doesn't specify a control group
Explanation:
The constants are the controlled variables. The scientist controls these items because a variable that remains unchanged prevents it from having any effect on the outcome.
The independent variable is the condition manipulated by the scientist to see its effects.
The dependent variables are the ones being measured or tested for in an experiment.
Randomization means every subject gets an equal chance at being in the control group. There are to few subjects. A control group would consist of elements that present exactly the same characteristics of the experimental group, except for the variable applied to the latter.
Be friendly at first with whomever you like, it is easier to get that person as a girlfriend if you have common groind; a friendship so it will be less akward for the both of you then slowly show her things that you like her be able to make her laugh but dont try to hard talk about her to your friends but not on no weird stuff then slowly make your moves like hand holding huggin kisses on the cheek there fore and so on and be protective over her but not possesive you know just show her you care
Answer:
The correct answer is - the placenta, the site of exchange of materials between the mother and the fetus.
Explanation:
In the given diagram there is a representation of a human embryo developing in the uterus. Different parts are numbered and the number three represents the site of exchange of materials between the mother and the fetus and this organ is called the placenta. It is the organ that develops between fetus and uterus during pregnancy that allows substances such as nutrients, to diffuse from the mother's blood to the fetus and connected by the umbilical cord.
They should consider that there might already be animals who have made their homes there. They should also consider whether or not the area is polluted as that could cause bad health effects in the park visitors.
We can use cars that don't pollute the air and we can reduce smoking.
