The answer is similar ecological opportunities on different continents have produced some striking examples of convergent evolution.
When the Pangea continent broke apart, different continents bore varying climates hence species adapted to their environment. Convergent evolution occurred when different species gained similar anatomical features that are resourceful in the environment (continent) in which they are living. An example of convergent evolution is exhibited in bats that are mammals but have features analogous to those of birds such as wings.
I believe the answer should be D i’m sorry if i’m wrong
Explanation:
Cells maintain a constant internal environment; this process called homeostasis, ensures that cells obtain an optimal environment in which they can best function.
The endocrine system involves chemical signalling via the secretion of molecules called hormones into extracellular fluid. They bind to chemical receptors in order to cause specific changes in target cells, these lead to changes in the body's internal environment called homeostasis.
It includes the thyroid, parathyroid, pituitary, pineal and adrenal glands along with other regions. The bone, adipose tissue, heart, pancreas and liver are a few of the regions of the body which show endocrine function. The brain, or control center functions to receive and process the information from the receptor. Effectors receive the control center's command and illicits a response in the form of a feedback loop, that may oppose or enhance the stimulus.
Further Explanation:
During homeostasis the body maintains a constant internal balance in pH, temperature, blood pressure etc. Cells in a multicellular organism become specialized for particular tasks and communicate with one another in order to maintain homeostasis. Within the human body these are known as hormone cascades, where several complex steps occur- the tissues signal to one another with the use of hormones released by the endocrine system. The regulation (increase and decrease) of these secretions is achieved by negative feedback loops, where the release of certain substances during a cascade in turn halts the secretion of hormones at earlier stages.
For example, cells within the human body function at an optimal temperature between 97°F (36.1°C) and 99°F (37.2°C). This is due to the optimal temperature requirement of the enzymes within the human body, which requires this specific range to obtain activation energy.
Learn more about tissue types at brainly.com/question/8487952
Learn more about homeostasis at brainly.com/question/1601808
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D. They had to see if this new idea fit the evidence they found in their experiments.
Solution:
A frame of reference is also a system of lines and clocks that you can use to measure the position and motion of a set of objects and events in relation to each other.
It is a system of geometric axes in relation to which measurements of size, position, or motion can be made.
It might seem strange to use a coordinate system moving relative to the earth. But, for instance, the frame of reference moving along with a train might be far more convenient for describing things happening inside the train. It is particularly important when describing an object's displacement.
If the position of any one at a point O then he has a set of coordinate axes to measure the position of a body. x.y.z in units in meter. So he locates the point as x meters along x-axis , y meters long y-axis and z meters along z axis. along z axis.
These three axes are perpendicular to each other then are called orthogonal axes or frame of reference. The time of an event can be measured by a clock.
The frame is said to be attached to the observer…as his scale of measurement is his own.
By this statement that he found a body P at (x,y,z) he is locating the body in space and if the time was t then the location is in space-time.
Thus we get that changing frame of reference will affect the system of the Earth.
