One measure of the human impact on the biosphere is called
a. biological magnification.
b. biodiversity.
c. an ecological hot spot.
d. an ecological footprint.

Aplant has an egg with 34 chromosomes how many chromosomes does a leaf cell of that plant have

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons