A independent variable is a variable which the experimenter can control and by changing the independent variable the experimenter observes or records the value of dependent variable.
so i see if you are asking independent than the answer is A.
if you are asking dependent variable than the answer may be B because manipulated by changes to the independent variable would be the best answer.
D. meiosis
Because the dna is replicated only one time, then are divided into 4 seperate cells
Answer:
B
Explanation:
All living beings are in fact descendants of a unique ancestor commonly referred to as the last universal common ancestor (LUCA) of all life on Earth, according to modern evolutionary biology. Common descent is an effect of speciation, in which multiple species derive from a single ancestral population.
The correct answer is C. Newborn giraffes are capable of coordinated walking within an hour of birth, and running within 24 hours of birth.
Explanation:
In biology, k-selected species are species that have stable populations although they do not give birth to multiple offspring at once and individual offspring are mainly big animals that require more time to mature this makes parents invest more time and effort in them to guarantee they survive. According to this, giraffes can be classified as k-selected species because they usually have limited offspring (Giraffes rarely give birth to twins), they seem to mature slowly and offspring requires more care and time (giraffes begin mating at 6-7 years of age) and they are large when they are born (Giraffes are approximately 6’ tall and weigh 150 lbs at birth).
However, the fact "Newborn giraffes are capable of coordinated walking within an hour of birth, and running within 24 hours of birth" does not support the idea these animals are k-select species because this shows rapid maturation and little time and effort invested which is the opposite to k-selected species.
It helps the cell by making sure everything gets circulated throughout the cell
