Answer:
Fossil evidence shows that vertebrates made the transition from water to land during the <u>DEVONIAN</u> period.
<u>SALAMANDERS</u> are amphibians that most closely resemble early tetrapods in body form with a long tail and 4 limbs of similar length.
A distinctive characteristic of mammals that is not observed in other vertebrates is <u>ENDOTHERMY</u>.
By the end of the <u>CAMBRIAN </u>period, all major animal lineages were present in the seas due to a great adaptive radiation of animals.
The vertebrate lung first appeared in <u>AMPHIBIANS</u>
Explanation:
Vertebrates started to transition from water to land later in the Devonian period. The vertebrates had to adjust to living on land such as withstanding gravity, breathing in air, adjusting senses to living on land than on water, and significant water loss due to the new environment. This was a big step in the realm of evolution because vertebrates were now able to thrive because they are no longer limited to the resources and space of water.
Salamaders are said to have not evolved much and have some characteristics that resemble early tetrapods. Regeneration of limbs is one of the salamanders unique capability which early tetrapods possessed.
Amphibians are ectotherms, which means they get their energy outside their body or their source of heat would be the heat from the environment. Amphibians and reptiles are ectotherms, and mammals are endotherms. Endotherms can generate heat internally.
The Cambrian period marks the Cambrian Explosion. According to fossil records modern organisms evolved rapidly and soon after split into different phyla due to adaptive radiation as a result of the extinction of dinosaurs.
The evolution of lungs is one of the most important changes in vertebrates which allowed early amphibians of water to move to land. It enabled them to breath air.
D from the sea to the land
Answer:
The correct answer would be -
the dependent - The distance it took for each car to stop
independent - different models of cars
control variables- accelerate to 60 mph
Explanation:
Independent variables are the variables in a study is that are get manipulated or changed to find or study the response or difference in the dependent variable. Here in this, the manipulation is a difference in the models of the cars.
The dependent variable is in this study or experiment is the distance both models took for each to stop after hitting the brakes as it depends on the independent variable.
Control variables are the variable is the variable that remains constant during the experiment so there would be no other influence than independent, in this case, speed or acceleration and same time hitting brakes are control variables.
The population of the red deer is increasing at point x but then afterwards it stops and become constant .
I hope that helps and sorry if my answer turned out wrong but I tried my best so enjoy!!
Answer:
Explanation:
Land plants are one of the major support of life. Oxygen gases given as a waste product from plant is what human takes in as air to support life. Lands plant provides the major food we eat, which without men cannot survive.
Most medicines, herbs used in various ailment treatment are from land plant this makes them of immense important on the planet earth.
They help in maintaining the ecosystem by reducing the effect of global warming while making use of abundant carbon dioxide that is available in the atmosphere.
