The red-legged frog breeds in ephemeral ponds from January through March. Its relative, the bullfrog, breeds in permanent ponds from late March through May. There are two pre-mating isolation mechanism at play here,
1. Ecological isolation: The habitats are different, hence the individuals of both the species do not meet. Ephemeral ponds are temporary ponds that develop during rainy days, while the permanent ponds are full of water throughout the year.
2. Temporal isolation: The time of mating is different for both the species to avoid contact between the individuals of closely related species. Red-legged frogs mate in January to March slot and the bullfrog in the March to May slot.
D is the answer of transportation
For bones to function, they need muscles and for muscles to function, they need bones.
The 3rd one is the answer I think
<span>I believe the correct words to fill in the blanks are RNA and nuclear pores. RNA, not dna can leave the nucleus through the nuclear pores in the nuclear envelope. Hope this answers the question. Have a nice day. Feel free to ask more questions. Have a nice day.</span>
