What is one reason why black stains are spreading across the murals in lascaux cave

what do you want me to answer?

waves come crashing to grey sullen shores.

powerful and strong, it breathes and roars.

cascading and caressing each grain of sand,

a warm embrace between sea and land.

high above, a seagull soars high.

wings of purity it spreads to fly.

battling high against darkened cloud,

in a wind that blows fiercely, flying graceful and proud.

beneath, the sand is soft and warm.

sculpted by nature, it's weathered the storm.

a passionate battle between calmness and rage,

a new chapter's beginning; don't turn the last page.

i listen again to the whispering waves,

music of nature calming and brave.

its power unknown, its stillness untamed,

mysterious and magical, a treasure earth claims.

plz mark brainliest

explanation: