Answer:
body size
more
circulatory system
egg deposition
Explanation:
Because of their large <em>body size</em> , ancestral amphibians likely faced challenges supporting themselves out of the aquatic environment.
Although there was far <em>more</em> oxygen available to gills in air than in water, the delicate structure of gills couldn't be supported in the terrestrial environment.
The costs of locomotion on land and greater oxygen demand from enlarged muscles led to modifications of the heart and <em>circulatory system</em>
These early amphibians could not venture too far away from water because <em>egg deposition</em> was restricted to moist environments.
Answer:
are u in ac science?that is in 6th
Explanation:
ok if u arent i can not help u i am so sorry
The most efficient procedure that scientist can use to obtain more
recombinant dna for a particular trait is Clone the dna in
a biological vector. This method will give more assurance that they
will get the traits that they wanted form the subjects.
Answer: Acid-fast and Gram
Explanation:
The gram stains peptidoglycan and the acid-fast stain stains mycolic acid, which are both in the cell wall.
Answer:
Vascular tissue is responsible for transporting water, mineral and sugar to differnt parts of the plant
Explanation:
