Phloem

a. transports food and nutrients
b. transports water and minerals
c. are made of dead cells
d. is a type of ground tissue

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?