The discovery of a natural clock was so important because it allowed a more easier way to check time than to use the sun, or sigils.
The answer is Carbon Dioxide. Oxygen is created during photosythesis. :)
The answer is 3/10 because there are 5 in the US and 10 in Australia. 3 from the US are also mined in Australia.
So it's 3/10
Hope this helps! :-)
Answer:
a. Gametophytes of bryophytes
d. Sporophytes of seedless vascular plants
Explanation:
Bryophytes are non-vascular plants. The plant body is haploid gametophyte which is its dominant phase and bears sex organs. The gametophyte may be leafy as in moss and may be with thalloid as in liverworts.
Pteridophytes are seedless, true vascular plants. The plant body is the diploid sporophyte. The sporophyte is differentiated into true leaves, stem and roots.
Most invertebrates leave their young to fend for themselves while vertebrates help their young till they are ready
