Chloroplast is the same as solar cell ! because it traps energy of the sun and helps in formation of food , made by plant !
Crab grass does so well when ordinary grass struggles in late summer
because its seed germination is higher when exposed to hotter
temperatures.
The seeds of crab grass are mostly dormant and their germination is
dependent on the soil temperature. During summer, the temperature of the
soil is usually higher which aids its growth .
This therefore explains the reason why crab grass does well than ordinary
grass in late summer periods.
Read more about Crab grass brainly.com/question/7601938
I'm not a hundred percent sure but try asking Google
Water, air, food, shelter