I needa answer. Answer Choices
1) bass and small invertebrates
2) small invertebrates and crabs
3) water plants and clams
4) crabs and crayfish

answer; ///as energy flows through an ecosystem,energy (decreases) at each

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

answer: 4

explanation: 8

the backbone of the dna and rna compound is sugar phosphate.