Gametes are formed in a process called:

a
crossing over
b
meiosis
c
mitosis
d
replication

According to the cladogram, which organisms have roundworms as a common ancestor?

20 points and brainlist 1. london has suffered from terrible air pollution for at least seven centuries. why is the city so prone to its famous “london fog? ” what did london do to get rid of its air pollution? 2. why does air pollution cause problems in developing nations more than in developed ones?

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?