Which plants first developed a circulatory system?

a.

Mosses

c.

Ferns

b.

Worts

d.

Horsetails

What is the name of the tallest man alive

Of the planets listed which is closet to the sun

As sea levels fell during Earth's geological past, inland seas and waterways vanished. In many cases, these left behind which type of rock formations?

Suppose a gene has three exons, with 570 nucleotides in exon 1, 420 in exon 2, and 810 in exon 3. during a splicing event, exon 2 is accidently spliced out. what is the length of mature mrna from this gene?

Mules, the offspring of donkeys and horses, are commonly used as pack animals. Despite the existence of mules, horse and donkeys are considered separate species, Which discovery would change that thinking and define horses and donkeys as the same

Beekeepers and scientists are puzzled and troubled by a decline in bee populations around the world. what would you predict as a likely consequence of the widespread lack of bees?

What kind of energy does matter have when it is in motion?

Zoe forgets to wash her hands before handling some samples in Petri dishes, and as a result, some of the samples become contaminated. What is a likely source of error in this experiment

In your body, different types of cells use different genes. True or false?

What happens to the egg follicle in the ovary as fsh rises